Organize fails if moving from one sub-folder to another more then once

Create or find a collection with two sub-folders, each with at least one thing in them. Now use organize to move a resource from one sub-folder to another. That works the first time. Now do it again (To move it back for example.) You are told that the collection has changed since you started the 2nd organize function.

It is likely that the Solr index is not updated when the sub folders of the collection in view are modified.