I am using the latest version of 2019 and I have been experiencing this issue for a few weeks now. My main medical TM is no longer updating. It is about 1.3 GB. I am working with packages sent by my client, to which I append my own local TM. There is no other TM besides mine.
My issues are:
1) Newly translated segments are not being saved in the TM.
2) Segments are not leveraged correctly.
As for 1, I have checked the Update field is selected in the Project Settings. I have also tried to update the TM from Batch Tasks > Update TM (both Main TM and Project TM)
I get 0 errors but a tons of warnings due to 'an unspecified error' for each segment of my file.
I have also tried to use a language-specific TM. I have proof that the segments aren't saved in the TM because I open the TM in the TM Editor directly and it doesn't find the latest segments I have been translating.
I have tried to repair the TM using the TM repair tool and it was correctly 'repaired' and there is no error message whatsoever indicating something might be wrong.
As for 2, I don't understand why identical sentences are not recognized as such, like in the example below.
I am spending more time than due to translate because I have been working without TM. Basically, I filter segments and copy-paste the previous translation earlier in the same document. This is prehistoric!
Can you turn off lookahead and try again? Certainly the second problem seems to be related to this. I can't comment on TUs not being saved at all yet, but please try disabling lookahead first and then see what happen. It's under File->Options->Editor->Automation.
Done, and turning off Automation > Lookahead didn't change a thing.
These are my current settings: