Small dude about compatibility with UE original Rig

Hi!! i have created several characters with the same proportion to the mannequin, I could import it to UE and directly use the UE rig in the FBX import options.

But one of them is small, it has the bones in different positions, when importing it into UE I couldn’t use the original rig, I would have to import my modified rig with the bones in different positions.

I guess this character with a modified rig couldn’t be advertised as fully compatible with the UE rig, right?