If you use the cool low price Affinity Designer (2D vectorial prog)
( less 28 € during the Covid period) less 11€ for IPad ( wishing they make the same for Android ;)
you can make directly CTRL + C , CTRL + V to Moi3D!
For the inverse Moi3D to Affinity Designer use
script: moi.geometryDatabase.copyToClipboardPDF();
Careful ClipboardAI from Moi don't works!
Put the 2 progs in A4 format for no problem of Scale !