Slitherine

I destroyed both Su-122 in turn 3 and 4 and only one counts. I tried with air units and with tanks but no green check for the objective.
This is the first Order of Battle DLC that really has a lot of boring bugs and I own all of them.
In another scenario I managed to capture a KV-1 and the next few tries nothing even I tried with the same method, very random.
This is the third playthrough because of the air commander bug and I am getting bored.

For the captured KV you need to destroy both an enemy KV-1 and a KV-2 before turn 10 at Kalach.

Edit: pls. check if you get a SU-122 at the next scenario (Kursk). Because it's supposed to come in there only.

Thank you for the KV-1 hint , are there more secret objectives?
Btw. Kursk I still miss the StuH 42 upgrade for my Stug III, is it then or did I miss something?

Not sure if I should spoil all at this point? Let's say for now you can get max. 3 captured units in PK, a KV1, a T34, and another, weaker unit that is randomized, so it will not always appear.

As for the StuH, I agree it should be made available, but this has probably lower priority vs. other issues.

It would be very appreciated if you could incidentally mention in which scenario the T-34 could be captured
No spoiler how just in which

Kharkov too - but 1942