Recently tried to use Fusion to do some roto instead of Flame or Flare. This was to be exported and brought back into flame. On my export though I was getting an odd resize. I tried exporting both a black and white image straight from the merged polygon nodes as well as the original imported file with the roto as an alpha. It would export the same resolution file as what was brought in but the actual image would be smaller, with black around it. Tried various settings on the deliver page and didn't find anything myself in the manual. Anyone ever run into such an issue. Getting together some tests to try to replicate the issue, since I can't use images from the project I actually had the issue. Also should note im using the paid studio version.
The paid Studio version of Fusion or Resolve? I can't tell for sure, but you refer to the 'deliver page' instead of a saver. Please elaborate, because that can help us help you.