Hi,
We have recently come across a strange behavior of our TM when changing Context Matches.

We use Trados Studio 2015 and the file to translate is a .po file. Our TM was built on the basis of .po files previously translated by another company.

The prepared (pre-translated) .po.sdlxliff file looks as follows in the Editor view:

The pre-translated segments are assigned the AT flag, which seems normal to me, because they come from a TM built from automated translation files.

In the translation results view, the selected segment appears as a Context Match, which seems normal to me, as well, because the files from which the TM was created have the same (context) structure as the one to be translated.

But when I change one of these Context Matches (I added '_TEST' in the example) and confirm the translation, the Context Match is not updated (which is what I would expect) but two 100% matches are created:

When I change a segment that is marked as a 100% match and confirm the translation, it appears as a Context Match and the former translation still appears as a 100% match in the translation results:

So if I want to get only one translation per segment (i.e., the changed one), I have to delete the existing one, which is s very annoying and time-consuming.

Is this an expected behavior? Or is there a TM option we overlooked? Exporting the TM content and importing it into a completely new one doesn't change anything.

Thank you  very much!