So I ran GPTs Subset (2 in the preview window) with:
Polygon ((-97.56358828861178267 14.96860616344341643, -97.56358828861178267 14.73100794671138303, -97.10260713307185654 14.73100794671138303, -97.10260713307185654 14.96860616344341643, -97.56358828861178267 14.96860616344341643))
And then ran SNAPs subset (3 in the preview window) with:
-97.56358828861178267 14.96860616344341643, -97.10260713307185654 14.73100794671138303
As you can see, SNAPs subset appears to be correct whereas GPTs still looks like it’s the full scene size. I assume that when it comes to Terrain Correction, the data is not mirroring the metadata?