Is it possible to transform a sprite frame within a flipbook?

I have a four frame flipbook. However, each frame is the same sprite consecutively rotated 90 degrees. Currently I have to store 4 rotated copies of the same sprite in my sprite sheet. It would be nice to just include the 1 sprite, duplicate it 4 times in the flipbook, and rotate each frame in there. Is there anyway to do this?

I know I can just have a 1 frame flipbook and then rotate the actor in BluePrint, but it would be nice to author my animations with in a flipbook. There doesn’t seem to be very much that you can do with an individual sprite frame within a flipbook. There’s an option to change the material, another thing that would be nice to do to a single sprite frame, but it doesn’t actually change that sprite’s material when playing back the flipbook.