Yes, segments marked as Translated in Studio are imported as Confirmed in Memsource.

This is what I see when I open the finalized file in the Memsource editor after translating it in Studio:

What do you see?

Also, in case you'd like to compare, this is what my filetype looks like:

Thanks Nora, my Filetype is exactly the same.

Here's what I get

Basically, the text is updated but the status remains the same

That is strange. And in Studio your segment status is Translated, Translation Approved or Signed Off for those segments?

Here's a comparison of each of the various Studio segment statuses and what they look like in the finalized mxliff file in my system:

Here you can see that the Translated, Translation Approved and Signed Off segment statuses in Studio are mapped to Confirmed in Memsource, with Not Translated, Draft, Translation Rejected and Sign-Off Rejected showing as Unconfirmed.

Actually, after carefully verifying, all "translated" segments in Studio appear as "not translated" in Memsource

Actually, after carefully verifying, all "translated" segments in Studio appear as "not translated" in Memsource

Very strange also that your "Not confirmed" symbol is grey instead of red, but I have no idea what could be causing all this, except to ask if you have the latest version of the Memsource editor. Maybe it would also be a good idea to inspect your mxliff file and see what's in there. If I open one of my files in Notepad++, I can see that segments with a status of Confirmed show a 1, and those with a status of Not Confirmed show a 0.

And just to check, what happens when you manually confirm the segments in Memsource? Do they correctly change to Confirmed? That may be the quickest workaround for now, just selecting all the segments at once and changing them to Confirmed directly in Memsource while you investigate the issue further.