Copying filters - cancels keyframe changes

Hi please advise - I’m pasting a set of filters into a shot. I deliberately have all the sets without keyframes - I copy all the filters. For this shot I will adjust maybe the brightness filter using keyframes. When I want to paste the copied filters (without keyframes) into the next shot, the paste icon is offered but not functional. This is how I have been doing it so far but it is no longer working. Of course there are other ways to do it - like always pasting filter sets but this seemed the fastest. Is this a feature of the program or a bug? Thanks. My last effort:https://youtu.be/d8ajHC6R3X0

Please improve this post because it is confusing by mixing three concepts:

  • Keyframes (especially as mentioned in the subject, but description always says “without keyframes”)
  • Filter Sets, the specific feature with that name in Shotcut
  • Copy and paste filters

Leave out “keyframes” if that is not relevant. Consider to provide steps.