diff --git a/python/tests/integration/toolbox/test_storage_mover.py b/python/tests/integration/toolbox/test_storage_mover.py
new file mode 100644
index 00000000000..b9c94c0af4f
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+++ b/python/tests/integration/toolbox/test_storage_mover.py
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+import numpy as np
+import pytest
+
+from typing import List, Tuple
+from hypothesis import given, strategies as st, settings
+from arcticdb.config import Defaults
+from arcticdb.version_store.helper import ArcticcMemConf, get_lib_cfg
+from arcticdb.toolbox.storage import SymbolVersionsPair, KeyType, get_library_tool, Key
+from arcticcxx.tools import StorageMover
+from pandas import DataFrame
+from pandas.testing import assert_frame_equal
+from arcticc.util.test import sample_dataframe
+
+# configure_test_logger("DEBUG")
+
+
+def add_data(version_store):
+    version_store.write("symbol", sample_dataframe())
+    version_store.write("pickled", {"a": 1}, pickle_on_failure=True)
+    version_store.snapshot("mysnap")
+    version_store.write("rec_norm", data={"a": np.arange(5), "b": np.arange(8), "c": None}, recursive_normalizers=True)
+    version_store.write("symbol", sample_dataframe())
+    version_store.snapshot("mysnap2")
+
+
+def compare_two_libs(lib1, lib2):
+    ver1 = lib1.list_versions()
+    ver2 = lib2.list_versions()
+
+    print(ver1)
+    print(ver2)
+
+    assert len(lib1.list_versions()) == len(lib2.list_versions())
+    assert lib1.list_versions() == lib2.list_versions()
+    assert lib1.list_snapshots() == lib2.list_snapshots()
+
+    assert_frame_equal(lib1.read("symbol", as_of=0).data, lib2.read("symbol", as_of=0).data)
+    assert_frame_equal(lib1.read("symbol", as_of=1).data, lib2.read("symbol", as_of=1).data)
+    assert_frame_equal(lib1.read("symbol", as_of="mysnap").data, lib2.read("symbol", as_of="mysnap").data)
+    assert_frame_equal(lib1.read("symbol", as_of="mysnap2").data, lib2.read("symbol", as_of="mysnap2").data)
+
+    assert lib1.read("pickled").data == lib2.read("pickled").data
+    assert lib1.read("pickled", as_of="mysnap").data == lib2.read("pickled", as_of="mysnap").data
+    assert lib1.read("pickled", as_of="mysnap2").data == lib2.read("pickled", as_of="mysnap2").data
+
+    assert lib1.read("rec_norm").data.keys() == lib2.read("rec_norm").data.keys()
+    assert all(lib1.read("rec_norm").data["a"] == lib2.read("rec_norm").data["a"])
+    assert all(lib1.read("rec_norm").data["b"] == lib2.read("rec_norm").data["b"])
+    assert lib1.read("rec_norm").data["c"] == lib2.read("rec_norm").data["c"]
+    assert lib1.read("rec_norm", as_of="mysnap2").data.keys() == lib2.read("rec_norm", as_of="mysnap2").data.keys()
+
+
+def test_storage_mover_single_go(lmdb_version_store, arcticc_native_local_lib_cfg_extra):
+    add_data(lmdb_version_store)
+    arcticc = ArcticcMemConf(arcticc_native_local_lib_cfg_extra(), env=Defaults.ENV)
+    lib_cfg = get_lib_cfg(arcticc, Defaults.ENV, "local.extra")
+    lib_cfg.version.symbol_list = True
+    dst_lib = arcticc["local.extra"]
+
+    s = StorageMover(lmdb_version_store._library, dst_lib._library)
+    s.go()
+
+    compare_two_libs(lmdb_version_store, dst_lib)
+
+
+def test_storage_mover_key_by_key(lmdb_version_store, arcticc_native_local_lib_cfg_extra):
+    add_data(lmdb_version_store)
+    arcticc = ArcticcMemConf(arcticc_native_local_lib_cfg_extra(), env=Defaults.ENV)
+    lib_cfg = get_lib_cfg(arcticc, Defaults.ENV, "local.extra")
+    lib_cfg.version.symbol_list = True
+    dst_lib = arcticc["local.extra"]
+
+    s = StorageMover(lmdb_version_store._library, dst_lib._library)
+    all_keys = s.get_all_source_keys()
+    for key in all_keys:
+        s.write_keys_from_source_to_target([key], 2)
+
+    compare_two_libs(lmdb_version_store, dst_lib)
+
+
+def test_storage_mover_symbol_tree(arcticc_native_local_lib_cfg_extra, arcticc_native_local_lib_cfg, lib_name):
+    col_per_group = 5
+    row_per_segment = 10
+    local_lib_cfg = arcticc_native_local_lib_cfg(lib_name)
+    lib = local_lib_cfg.env_by_id[Defaults.ENV].lib_by_path[lib_name]
+    lib.version.write_options.column_group_size = col_per_group
+    lib.version.write_options.segment_row_size = row_per_segment
+    lib.version.symbol_list = True
+    lmdb_version_store_symbol_list = ArcticcMemConf(local_lib_cfg, Defaults.ENV)[lib_name]
+
+    lmdb_version_store_symbol_list.write("symbol", sample_dataframe(), metadata="yolo")
+    lmdb_version_store_symbol_list.write("symbol", sample_dataframe(), metadata="yolo2")
+    lmdb_version_store_symbol_list.write("snapshot_test", 1)
+    lmdb_version_store_symbol_list.snapshot("my_snap")
+    lmdb_version_store_symbol_list.snapshot("my_snap2")
+    lmdb_version_store_symbol_list.snapshot("snapshot_test", 2)
+    lmdb_version_store_symbol_list._delete_version("snapshot_test", 0)
+    lmdb_version_store_symbol_list.write("pickled", {"a": 1}, metadata="cantyolo", pickle_on_failure=True)
+    lmdb_version_store_symbol_list.write("pickled", {"b": 1}, metadata="cantyolo2", pickle_on_failure=True)
+    lmdb_version_store_symbol_list.write("pickled", {"c": 1}, metadata="yoloded", pickle_on_failure=True)
+    lmdb_version_store_symbol_list.write(
+        "rec_norm",
+        data={"a": np.arange(1000), "b": np.arange(8000), "c": None},
+        metadata="realyolo",
+        recursive_normalizers=True,
+    )
+    lmdb_version_store_symbol_list.write(
+        "rec_norm",
+        data={"e": np.arange(1000), "f": np.arange(8000), "g": None},
+        metadata="realyolo2",
+        recursive_normalizers=True,
+    )
+
+    lmdb_version_store_symbol_list.write("dup_data", np.array(["YOLO"] * 10000))
+
+    arcticc = ArcticcMemConf(arcticc_native_local_lib_cfg_extra(), env=Defaults.ENV)
+    lib_cfg = get_lib_cfg(arcticc, Defaults.ENV, "local.extra")
+    lib_cfg.version.symbol_list = True
+    dst_lib = arcticc["local.extra"]
+
+    s = StorageMover(lmdb_version_store_symbol_list._library, dst_lib._library)
+    sv1 = SymbolVersionsPair("symbol", [1, 0])
+    sv2 = SymbolVersionsPair("pickled", [2, 0])
+    sv3 = SymbolVersionsPair("rec_norm", [1, 0])
+    sv4 = SymbolVersionsPair("dup_data", [0])
+    sv5 = SymbolVersionsPair("snapshot_test", ["my_snap", "my_snap2"])
+    res = s.write_symbol_trees_from_source_to_target([sv1, sv2, sv3, sv4, sv5], False)
+    assert len(res) == 5
+    for r in res:
+        for v in res[r]:
+            assert type(res[r][v]) == int
+
+    assert len(dst_lib.list_versions()) == 8
+    assert_frame_equal(lmdb_version_store_symbol_list.read("symbol").data, dst_lib.read("symbol").data)
+    assert_frame_equal(lmdb_version_store_symbol_list.read("symbol", 0).data, dst_lib.read("symbol", 0).data)
+    assert lmdb_version_store_symbol_list.read("symbol").metadata == dst_lib.read("symbol").metadata
+    assert lmdb_version_store_symbol_list.read("symbol", 0).metadata == dst_lib.read("symbol", 0).metadata
+
+    assert lmdb_version_store_symbol_list.read("pickled").data == dst_lib.read("pickled").data
+    assert lmdb_version_store_symbol_list.read("pickled", 0).data == dst_lib.read("pickled", 0).data
+    assert lmdb_version_store_symbol_list.read("pickled").metadata == dst_lib.read("pickled").metadata
+    assert lmdb_version_store_symbol_list.read("pickled", 0).metadata == dst_lib.read("pickled", 0).metadata
+
+    def comp_dict(d1, d2):
+        assert len(d1) == len(d2)
+        for k in d1:
+            if isinstance(d1[k], np.ndarray):
+                assert (d1[k] == d2[k]).all()
+            else:
+                assert d1[k] == d2[k]
+
+    comp_dict(lmdb_version_store_symbol_list.read("rec_norm").data, dst_lib.read("rec_norm").data)
+    comp_dict(lmdb_version_store_symbol_list.read("rec_norm", 0).data, dst_lib.read("rec_norm", 0).data)
+    assert lmdb_version_store_symbol_list.read("rec_norm").metadata == dst_lib.read("rec_norm").metadata
+    assert lmdb_version_store_symbol_list.read("rec_norm", 0).metadata == dst_lib.read("rec_norm", 0).metadata
+
+    np.testing.assert_equal(lmdb_version_store_symbol_list.read("dup_data").data, dst_lib.read("dup_data").data)
+    assert lmdb_version_store_symbol_list.read("dup_data").metadata == dst_lib.read("dup_data").metadata
+
+    assert lmdb_version_store_symbol_list.read("snapshot_test", "my_snap").data, dst_lib.read("snapshot_test", 0).data
+
+    lmdb_version_store_symbol_list.write("new_symbol", 1)
+    lmdb_version_store_symbol_list.snapshot("new_snap")
+    lmdb_version_store_symbol_list.write("new_symbol", 2)
+    lmdb_version_store_symbol_list.snapshot("new_snap2")
+    lmdb_version_store_symbol_list.write("new_symbol", 3)
+    lmdb_version_store_symbol_list._delete_version("new_symbol", 1)
+    sv6 = SymbolVersionsPair("new_symbol", [2, 0, "new_snap", "new_snap2"])
+    dst_lib.write("new_symbol", 0)
+
+    res = s.write_symbol_trees_from_source_to_target([sv6], True)
+    assert len(res) == 1
+    assert "new_symbol" in res
+    assert res["new_symbol"][2] == 3
+    assert res["new_symbol"][0] == 1
+    assert res["new_symbol"]["new_snap"] == 1
+    assert res["new_symbol"]["new_snap2"] == 2
+
+    assert dst_lib.read("new_symbol", 0).data == 0
+    assert dst_lib.read("new_symbol", 1).data == 1
+    assert dst_lib.read("new_symbol", 2).data == 2
+    assert dst_lib.read("new_symbol", 3).data == 3
+
+
+def test_storage_mover_and_key_checker(lmdb_version_store, arcticc_native_local_lib_cfg_extra):
+    add_data(lmdb_version_store)
+    arcticc = ArcticcMemConf(arcticc_native_local_lib_cfg_extra(), env=Defaults.ENV)
+    lib_cfg = get_lib_cfg(arcticc, Defaults.ENV, "local.extra")
+    lib_cfg.version.symbol_list = True
+    dst_lib = arcticc["local.extra"]
+
+    s = StorageMover(lmdb_version_store._library, dst_lib._library)
+    s.go()
+
+    keys = s.get_keys_in_source_only()
+    assert len(keys) == 0
+
+
+def test_storage_mover_clone_keys_for_symbol(lmdb_version_store, arcticc_native_local_lib_cfg_extra):
+    add_data(lmdb_version_store)
+    lmdb_version_store.write("a", 1)
+    lmdb_version_store.write("a", 2)
+    lmdb_version_store.write("b", 1)
+    arcticc = ArcticcMemConf(arcticc_native_local_lib_cfg_extra(), env=Defaults.ENV)
+    lib_cfg = get_lib_cfg(arcticc, Defaults.ENV, "local.extra")
+    lib_cfg.version.symbol_list = True
+    dst_lib = arcticc["local.extra"]
+
+    s = StorageMover(lmdb_version_store._library, dst_lib._library)
+    s.clone_all_keys_for_symbol("a", 1000)
+    assert dst_lib.read("a").data == 2
+
+
+@pytest.fixture()
+def lib_with_gaps_and_reused_keys(version_store_factory):
+    lib = version_store_factory(name="source", de_duplication=True)
+
+    lib.write("x", 0)
+    lib.write("x", 1)
+    lib.write("x", 2)
+    lib.snapshot("s2")
+    lib.write("x", DataFrame({"c": [0, 1]}, index=[0, 1]))
+    lib.write("x", DataFrame({"c": list(range(5))}, index=list(range(5))), prune_previous_version=True)  # 2 slices
+    lib.write("x", 5)
+    lib.delete_version("x", 5)
+    lib.write("x", 6)
+
+    return lib
+
+
+@pytest.mark.parametrize("mode", ("check assumptions", "go", "no force"))
+def test_correct_versions_in_destination(mode, lib_with_gaps_and_reused_keys, lmdb_version_store):
+    s = StorageMover(lib_with_gaps_and_reused_keys._library, lmdb_version_store._library)
+    if mode == "check assumptions":
+        check = lib_with_gaps_and_reused_keys
+    elif mode == "go":
+        s.go()
+        check = lmdb_version_store
+    else:
+        s.write_symbol_trees_from_source_to_target([SymbolVersionsPair("x", ["s2", 4, 6])], False)
+        check = lmdb_version_store
+
+    lt = get_library_tool(check)
+    assert {vi["version"] for vi in check.list_versions("x")} == {2, 4, 6}
+    assert len(lt.find_keys(KeyType.TABLE_INDEX)) == 3
+    assert [k.version_id for k in lt.find_keys(KeyType.TABLE_DATA)] == [2, 3, 4, 4, 6]
+
+
+@settings(deadline=None)
+@given(to_copy=st.permutations(["s2", 4, 6]), existing=st.booleans())
+def test_correct_versions_in_destination_force(to_copy, existing, lib_with_gaps_and_reused_keys, version_store_factory):
+    try:
+        _tmp_test_body(to_copy, existing, lib_with_gaps_and_reused_keys, version_store_factory)
+    except:
+        import traceback
+
+        traceback.print_exc()
+        raise
+
+
+def _tmp_test_body(to_copy, existing, lib_with_gaps_and_reused_keys, version_store_factory):
+    # mongoose_copy_data's force mode rewrite version numbers in the target
+    source = lib_with_gaps_and_reused_keys
+    target = version_store_factory(name="_unique_")
+
+    if existing:
+        target.write("x", 0)
+
+    s = StorageMover(source._library, target._library)
+    s.write_symbol_trees_from_source_to_target([SymbolVersionsPair("x", to_copy)], True)
+
+    actual_vers = sorted(vi["version"] for vi in target.list_versions("x"))
+    print(to_copy, existing, "->", actual_vers)
+
+    lt = get_library_tool(target)
+    start = 0 if existing else 2  # mover starts at the first input version if target is empty....
+    n = int(existing) + len(to_copy)
+    assert actual_vers == list(range(start, start + n))
+    assert len(lt.find_keys(KeyType.TABLE_INDEX)) == n
+
+    source_keys: List[Key] = get_library_tool(source).find_keys(KeyType.TABLE_DATA)
+    expected_target: List[Key] = []
+    for item in to_copy:
+        if item == "s2":
+            expected_target.append(source_keys[0])
+        elif item == 4:
+            expected_target.extend(source_keys[1:4])
+        else:
+            expected_target.append(source_keys[-1])
+    expected_target.sort()  # key=lambda k: (k.version_id, k.start_index))
+
+    target_keys: List[Key] = lt.find_keys(KeyType.TABLE_DATA)
+    target_keys.sort()
+    if existing:
+        target_keys.pop(0)
+
+    for a, e in zip(target_keys, expected_target):
+        assert a.content_hash == e.content_hash
+        assert a.creation_ts >= source_keys[-1].creation_ts