Segment start frame resets once matched out

SOMETIMES… if I set the start frame on all the segments in my edit (to 1001), and then match out the media to the library, all, or some of the start frames reset themselves to the original, TC based start frame (1535440 - or something mad).

The fact that this bug only happens sometimes and not always is very confusing. Yesterday I did this on one edit and everything landed in the library with 1001 start frames, today nothing keeps the start frame I set. On other pojects I’ve had some keep the 1001 start frame and other clips revert (in the same match out).

It makes using start frames unreliable and unusable.

Is everybody else seeing this same behaviour? (I’m on 2025.2.0.2 Linux)

Is there a workaround?

Thanks

No replies?

Does anybody use start frame numbers?

yes, but i’m using openclip for sources and once a timeline is conformed or a batch group is setup, i’m not matching anything out.

did you document the steps and file a bug report?

Not yet. Thought I’d see if anybody here could help first.

Do you set start frame numbers in the timeline after conform and then publish?

Do the start frames survive correctly?

I’ve just had a thought. It’s probably that bug/feature that matches things from elsewhere if you have another copy in an open library or desktop.

yep - you could 100% be right about that.
i set the start frame in the project setup and forget it.