Normally I export as a gif, while cropping it, then after approval I send PNG sequence with the same crop.
and at the and export as mov video for portfolio.
Sometimes I export as gif but client asks to export mov file. then they just want to experiment with WEBM.
Would be crazy if those copied values could be transferable from project to project, since sometimes I have 10 objects and they all need to be exported exactly in the same ratio/size document, so I end up copying from one window to another value by value... but I guess this fix is not happening 😃
So maybe just copy between export types within the same project instance.