I Used the Merge tool to merge Souce1.tsr with source2.tsr in to tagert.tsr. AFter merge I could see the target1 with all objects in the Tool..
Once I close the Merge tool, I try to open the target.tsr in either Merge tool/QTp Obj Rep Viewer, there are no objects in it, though the file size is 2MB.
I tried this several times, the problem persists.
My QTP version 8.2
Have you tried the Downloads or knowledge base sections on the MI site. I'm fairly positive that there is something about the merge repository there. Failing that you could always try the "Sirius QA" tool AORE (advanced object repository editor) for QTP 8. Have used it only a couple of times but it seems to do the trick. Other than that I'm sorry i can't offer any more info...