diff --git a/src/division.cpp b/src/division.cpp
index c1bb6c0..9ef79e6 100644
--- a/src/division.cpp
+++ b/src/division.cpp
@@ -196,8 +196,11 @@ Division::Division(Project *_project, MidiData &src, const DivisionSetting &sett
 void Division::divide_from_data(MidiData &src, const DivisionSetting &setting, bool copy) {
     if (copy)
         src_data = src; // store a copy of the src data...
-
-    init(); /* clean ourselves up */
+    else {
+        auto q = quantize;
+        init(); /* clean ourselves up */
+        quantize = q;
+    }
 
     name = setting.name;
 
diff --git a/src/midi_data.h b/src/midi_data.h
index a9239e1..26796c7 100644
--- a/src/midi_data.h
+++ b/src/midi_data.h
@@ -22,8 +22,10 @@ class MidiData{
 	typedef std::pair<int, MidiParamsLane> MidiCCLanePair;
     wxString source_filename;
 
+protected:
+    int quantize;
+
 private:
-	int quantize;
 
 	MidiNotesLane note_events;	// �m�[�g
 	MidiParamsLane pb_events;	// �s�b�`�x���h
diff --git a/src/midi_smfin.cpp b/src/midi_smfin.cpp
index 5a23a4a..78c9f7d 100644
--- a/src/midi_smfin.cpp
+++ b/src/midi_smfin.cpp
@@ -158,11 +158,14 @@ bool MidiData::load_smf(const wxString &filename) {
     if (!smf.load(filename)) {
         return false;
     }
+
+    init(); /* az: don't write on top of existing MIDI data in case of reload */
+
     quantize = smf.get_delta_time();
     size_t track_count = smf.get_track_count();
     if (!track_count) return false;
 
-    init(); /* az: don't write on top of existing MIDI data in case of reload */
+
     source_filename = filename;
 
     std::vector<MidiData_PreLoader> track_pre(track_count);