Why is SVN merge not tracking merged revisions?06 Nov 2014
The most likely answer:
The URL to merge from is case-sensitive. If you merge from a URL with the wrong casing the merge will work for the files but the revision will not be recorded in the MergeInfo property.
How I figured it out
Recently, my svn client merge-tracking stopped working. I was performing merges with TortiseSVN at the root level but the revision numbers where not being recorded in the MergeInfo Property. There were no error messages either.
I then tried merging directly with svn from the command line but got the same result. No error messages either.
It was not until I thought to try to do a merge from the command line with the
--record-only option. This was the only command that provided an actual error message:
svn merge -c 16304 https://server/svn/project/trunk/ --record-only
svn: E200004: Merge from foreign repository is not compatible with mergeinfo modification
Once I had a meaningful error, I was able to track down this old forum conversation (argument) about case sensitive urls and TortiseSVN.
I hope this saves you some time.