Move to Companion: Fix AssertionError on running refactoring from Conflicts View

#KT-13874 Fixed

ChangeLog.md

@@ -112,6 +112,7 @@ These artifacts include extensions for the types available in the latter JDKs, s
 
 - [`KT-9490`](https://youtrack.jetbrains.com/issue/KT-9490) Convert receiver to parameter: use template instead of the dialog
 - [`KT-11483`](https://youtrack.jetbrains.com/issue/KT-11483) Move to Companion: Do not use qualified names as labels
+- [`KT-13874`](https://youtrack.jetbrains.com/issue/KT-13874) Move to Companion: Fix AssertionError on running refactoring from Conflicts View
 
 ##### New features
 

idea/src/org/jetbrains/kotlin/idea/intentions/MoveMemberOutOfCompanionObjectIntention.kt

@@ -24,6 +24,7 @@ import com.intellij.util.containers.MultiMap
 import org.jetbrains.kotlin.idea.refactoring.checkConflictsInteractively
 import org.jetbrains.kotlin.idea.refactoring.move.moveDeclarations.*
 import org.jetbrains.kotlin.idea.refactoring.runSynchronouslyWithProgress
+import org.jetbrains.kotlin.idea.util.application.runWriteAction
 import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.psi.psiUtil.containingClassOrObject
 import org.jetbrains.kotlin.psi.psiUtil.isAncestor
@@ -73,8 +74,10 @@ class MoveMemberOutOfCompanionObjectIntention : SelfTargetingRangeIntention<KtNa
         }
 
         project.checkConflictsInteractively(conflicts) {
-            Mover.Default(element, targetClass)
-            deleteCompanionIfEmpty()
+            runWriteAction {
+                Mover.Default(element, targetClass)
+                deleteCompanionIfEmpty()
+            }
         }
     }
 }