A CD or other original digital source is really the only reliable source for an acoustId. Analog sources aren’t trustworthy, and I avoid submitting acoustIds from an analog source eg. from digitizing an LP. I do make an exception for albums I have that are rare and out of print, where often an original digital source is simply unavailable.
I’ve been digitizing some of my vinyl collection, including some that have no listed digital versions. Is there general support for the approach described above of submitting acoustids generated from an analog rip when there’s no other option? Or would it be better to leave the recordings with no acoustids?