white lines around vectorized png

HI all,
Is there anything to do about those pesky lines in Toon Boom. I have meticulously cut out pngs, with no feather, and import them straight, and there are still annoying white lines around the edges. Is this a problem I can solve only in photoshop selection process. Anything that would help in the vectorization settings? Or with effects? Any help would be much appreciated.
Thanks

Try this…
When exporting out of Photoshop, set the Transparency Matte Option to None or Black…
Or, the background colour you’re using in Animate…
(Regarding the white rim, presumably the Matte colour is set to White ?)

Then import and vectorize again…

Regards
Nolan