[SOLVED] Insert not found - and unremovable

I’ve imported a Cubase 3.1 project into Cubase Pro 8.0.20. Lots of missing inserts, which i can remove with the little right-arrow.

But some missing inserts (
Non-removable inserts.jpg
) are light-gray and cannot be removed. They generate error messages and keep occupying a slot.

How can i clear the slot?

The audiotracks were FROZEN… :wink: After unfreezing, I could delete the missing inserts.