diff --git a/plugins/de.cau.cs.kieler.klighd.lsp/src/de/cau/cs/kieler/klighd/lsp/interactive/InteractiveUtil.xtend b/plugins/de.cau.cs.kieler.klighd.lsp/src/de/cau/cs/kieler/klighd/lsp/interactive/InteractiveUtil.xtend
index 91a3c5786..16b30a04f 100644
--- a/plugins/de.cau.cs.kieler.klighd.lsp/src/de/cau/cs/kieler/klighd/lsp/interactive/InteractiveUtil.xtend
+++ b/plugins/de.cau.cs.kieler.klighd.lsp/src/de/cau/cs/kieler/klighd/lsp/interactive/InteractiveUtil.xtend
@@ -18,6 +18,7 @@ package de.cau.cs.kieler.klighd.lsp.interactive
 
 import de.cau.cs.kieler.klighd.KlighdDataManager
 import de.cau.cs.kieler.klighd.internal.util.KlighdInternalProperties
+import de.cau.cs.kieler.klighd.kgraph.KIdentifier
 import de.cau.cs.kieler.klighd.kgraph.KNode
 import de.cau.cs.kieler.klighd.lsp.KGraphLanguageClient
 import de.cau.cs.kieler.klighd.lsp.KGraphLanguageServerExtension
@@ -115,8 +116,8 @@ class InteractiveUtil {
         
         // from node to the start
         for (var i = pos - 1; i >= 0; i--) {
-            if (layerNodes.get(i).getProperty(LayeredOptions.CROSSING_MINIMIZATION_IN_LAYER_PRED_OF) !== null
-                || layerNodes.get(i + 1).getProperty(LayeredOptions.CROSSING_MINIMIZATION_IN_LAYER_SUCC_OF) !== null) {
+            if (layerNodes.get(i).getProperty(LayeredOptions.CROSSING_MINIMIZATION_IN_LAYER_PRED_OF) == getIdOfNode(layerNodes.get(i + 1))
+                || layerNodes.get(i + 1).getProperty(LayeredOptions.CROSSING_MINIMIZATION_IN_LAYER_SUCC_OF) == getIdOfNode(layerNodes.get(i))) {
                     chainNodes.add(0, layerNodes.get(i))
             } else {
                 i = -1
@@ -125,8 +126,8 @@ class InteractiveUtil {
         
         // count from node to the end
         for (var i = pos + 1; i < layerNodes.size; i++) {
-            if (layerNodes.get(i).getProperty(LayeredOptions.CROSSING_MINIMIZATION_IN_LAYER_SUCC_OF) !== null
-                || layerNodes.get(i - 1).getProperty(LayeredOptions.CROSSING_MINIMIZATION_IN_LAYER_PRED_OF) !== null) {
+            if (layerNodes.get(i).getProperty(LayeredOptions.CROSSING_MINIMIZATION_IN_LAYER_SUCC_OF) == getIdOfNode(layerNodes.get(i - 1))
+                || layerNodes.get(i - 1).getProperty(LayeredOptions.CROSSING_MINIMIZATION_IN_LAYER_PRED_OF) == getIdOfNode(layerNodes.get(i))) {
                     chainNodes.add(layerNodes.get(i))
             } else {
                 i = layerNodes.size
@@ -195,4 +196,19 @@ class InteractiveUtil {
         return
     }
     
+    /**
+     * Returns id of a node.
+     * 
+     * @param node The node.
+     * @returns The id string of the node.
+     */
+    static def String getIdOfNode(KNode node) {
+        var nameStringOfReferenceNode = node.toString
+        val id = node.getData(KIdentifier)
+        if (id !== null) {
+            nameStringOfReferenceNode = id.id
+        }
+        return nameStringOfReferenceNode        
+    }
+    
 }
\ No newline at end of file
diff --git a/plugins/de.cau.cs.kieler.klighd.lsp/src/de/cau/cs/kieler/klighd/lsp/interactive/layered/LayeredConstraintReevaluation.xtend b/plugins/de.cau.cs.kieler.klighd.lsp/src/de/cau/cs/kieler/klighd/lsp/interactive/layered/LayeredConstraintReevaluation.xtend
index 20873ad00..32a7ad6e0 100644
--- a/plugins/de.cau.cs.kieler.klighd.lsp/src/de/cau/cs/kieler/klighd/lsp/interactive/layered/LayeredConstraintReevaluation.xtend
+++ b/plugins/de.cau.cs.kieler.klighd.lsp/src/de/cau/cs/kieler/klighd/lsp/interactive/layered/LayeredConstraintReevaluation.xtend
@@ -116,6 +116,7 @@ class LayeredConstraintReevaluation {
         val layerConstraintTarget = ConstraintsUtils.getLayerConstraint(target)
         val layerId = target.getProperty(LayeredOptions.LAYERING_LAYER_ID)
         var originalLayerIndex = 0
+        // Calculate previous desired layer of target.
         if (layerConstraintTarget === null || layerConstraintTarget <= layerId) {
             originalLayerIndex = layerId
         } else {
@@ -123,7 +124,7 @@ class LayeredConstraintReevaluation {
         }
         val originalLayer = InteractiveUtil.getNodesOfLayer(originalLayerIndex, nodes)
 
-        if (originalLayer.length == 1) {
+        if (originalLayer.length == InteractiveUtil.getChain(target, originalLayer).size()) {
             // If a layer is emptied and disappears from the drawing 
             // then all layer constraint with a value higher or equal than
             // the disappeared layer need to be decremented.
diff --git a/plugins/de.cau.cs.kieler.klighd.lsp/src/de/cau/cs/kieler/klighd/lsp/interactive/layered/LayeredInteractiveLanguageServerExtension.xtend b/plugins/de.cau.cs.kieler.klighd.lsp/src/de/cau/cs/kieler/klighd/lsp/interactive/layered/LayeredInteractiveLanguageServerExtension.xtend
index 36c11357f..56f874a0d 100644
--- a/plugins/de.cau.cs.kieler.klighd.lsp/src/de/cau/cs/kieler/klighd/lsp/interactive/layered/LayeredInteractiveLanguageServerExtension.xtend
+++ b/plugins/de.cau.cs.kieler.klighd.lsp/src/de/cau/cs/kieler/klighd/lsp/interactive/layered/LayeredInteractiveLanguageServerExtension.xtend
@@ -217,6 +217,15 @@ class LayeredInteractiveLanguageServerExtension implements ILanguageServerExtens
             val changedNodes = absoluteConstraintReevaluation.changedNodes
             changedNodes.addAll(relativeConstraintReevaluation.changedNodes)
             changedNodes.add(new ConstraintProperty(targetNode, property, nameStringOfReferenceNode))
+            if (layerSwap) {
+                // Already apply changes to be able to correctly identify if a chain is split because of the new
+                // relative constraint.
+                changedNodes.forEach[constraint|
+                    val KNode kNode = constraint.KNode
+                    kNode.setProperty(constraint.property, constraint.value)
+                ]
+                absoluteConstraintReevaluation.reevaluateAfterEmptyingALayer(targetNode, referenceLayer, parentOfNode.children)
+            }
             refreshModelInEditor(changedNodes, KGraphUtil.getRootNodeOf(targetNode), uri)
         }
     }
@@ -458,8 +467,12 @@ class LayeredInteractiveLanguageServerExtension implements ILanguageServerExtens
                     absoluteConstraintReevalution.reevaluatePositionConstraintsAfterPositionChangeInLayer(layerNodes, kNode, newValueId)
                     absoluteConstraintReevalution.reevaluatePositionConstraintInChain(kNode, newValueConstraint, chain)
                 }
-                case LayeredOptions.LAYERING_LAYER_CHOICE_CONSTRAINT:
+                case LayeredOptions.LAYERING_LAYER_CHOICE_CONSTRAINT: {
                     absoluteConstraintReevalution.reevaluateLayerConstraintsInChain(layerId, chain)
+                    if (absoluteConstraintReevalution.reevaluateAfterEmptyingALayer(kNode, newValueConstraint, parentOfNode.children)) {
+                        newValueConstraint--
+                    }
+                }
             }
             
             changedNodes.addAll(absoluteConstraintReevalution.changedNodes)