I think that the full header should be included.
I tried merging just with the minimal header and some of the headers were deleted.
After adding the full headers in the partial export, I tried the merge again, but the result was a big mess.
The strings were not correctly replaced, and were generated many wrong fuzzy messages for messages that were not in the partial export.
I'm using msgmerge (GNU gettext-tools) 0.17
I have also attached an archive containing a partial export, the upstream export and the merged file
I think that the full header should be included.
I tried merging just with the minimal header and some of the headers were deleted.
After adding the full headers in the partial export, I tried the merge again, but the result was a big mess.
The strings were not correctly replaced, and were generated many wrong fuzzy messages for messages that were not in the partial export.
I'm using msgmerge (GNU gettext-tools) 0.17
I have also attached an archive containing a partial export, the upstream export and the merged file