Do Comcast email account inactivity rules still apply after switching over to Yahoo?

I have multiple comcast.net accounts -- the primary holder account, as well as some secondary accounts set up a number of years ago and still used.  I know Xfinity has some rules about how emails will be deleted after a given length of time without login to the email website (and maybe the account itself deleted for secondaries??).

Will any of these rules still apply after an account has been transferred to Yahoo's email platform? And how does the answer change (if at all) after discontinuation of Xfinity service?

Please answer for both primary and secondary accounts.

Thanks.