ContentStore Selector doesn't delete old files

[dedunudhananjay]

http://docs.alfresco.com/5.0/concepts/store-using.html says "Under normal circumstances, a trail of content will be left in the stores, just as it would be if the content were being modified. The normal processes to clean up the orphaned content will be followed."

I have two content stores
Content Store A and B

When I move a file from A to B alfresco create a new file in B. But it doesn't delete A file copy. i have configured eagerOrphanCleanup=true.

trashcan.cron=0 * * * * ?
trashcan.daysToKeep=0
trashcan.deleteBatchCount=1000

system.content.eagerOrphanCleanup=true

But still it leaves old files.  If I move the file from B to A it creates another file. Right now this file has 3 copies. Is there a way to delete older copies?

[dedunudhananjay]

I found out that when we change content store selector it creates a new version of the file with same content.