When trying to perform a concurrent merge using files that contain ASCII characters, the following error is generated:
I0002014d - Item <item_name> is not in text format.
After converting the files to binary files, the issue still persists
Harvest 14.0
Because the json file have non-ascii characters and must be stored as binary, Harvest is not able to do an "Aggressive" concurrent merge on the second branch. So, the only way to get this to work is through Interactive Merge.
On the second branch version, run a Concurrent Merge with the "Merge Conservatively" option. This will generate an "M" tag on the new version.
Then, to clear the "M" tag you will need to do an Interactive Merge which means viewing the branch and trunk versions to manually compare and merge the changes.