Yes, the recent CT version.
I didn't notice any padlock...
This file was pre-translated in Studio by the client.
I tried again (insert exact matches) in CT, using the newly downloaded source SDLXLIFF.
But it still does not work.
So I had to apply exact matches in Studio.
Did you set the Translated status before saving the file?
Can you send the original source file and the TM to the support e-mail address?
I never notice what is its cause.
I've done tag check, and all tags are inserted properly.
Any input is welcomed.