Copy-and-paste effect relatively to clip length

Hello,

I want to use the transform effect on one clip and then copy-and-paste it to another clip, but not with absolute, but relative keyframes depending on clip length. This may sound strange, because it is hard to explain, so let me give an example:

Clip A (10sec) starts with keyframe 1 at 00:00 with scale=200% and at keyframe 2 at 00:05 scale =100%.

Now I copy-and-paste the tranform effect to Clip B and get:

Clip B (20sec) starts with keyframe 1 at 00:00 with scale=200% and at keyframe 2 at 00:05 scale =100%.

So exactly the same.

But since Clip B has double the length of Clip A, I want keyframe 2 to be at 00:10, since 00:05 is the position at 50% of Clip A and 00:10 is the position at 50% of Clip B. That`s what I mean with relative position (in %) instead of absoulte position (in sec).

Is this possible in Premiere Pro?

Kind regards,

Max