Infuse resets when shuffled and redrawn

I used Gaslight Gatekeeper to put a Sylvanas, The Accused into my deck and when I drew it it’s infuse requirement was reset, as if I drew it for the first time. Is that the intended interaction? Is that the case with all infuse cards? If this is unintended, please take a look, because otherwise, Afterlife Attendant is really useless and it doesn’t seem right

Yes, if the Infuse was only partially satisfied.

If it was fully Infused, it should have kept that.