Let’s call this the MASTER track.
What I do is lock the last ‘good’ anchor, then I set a hot cue at the next ‘one’ beat.
I then place as temporary anchors, as close to each other as possible l, between the ‘last good’ anchor and the ‘next one’. This ‘pulls’ the anchor nearest to the next one beat close enough to the next one beat so that I can place an anchor on the next ‘one’ beat.
I then delete the temporary anchors between the ‘last good’ and the ‘next one’ anchors, and then reset the bpm at the ‘next one’ which is now anchored.
One thing to note is when the MASTER gets to this point, the BPM is usually very different to the main BPM of the track so… if you are in Sync, and you’re ‘in the mix’, the other track will follow the BPM of the MASTER and can result in a measure or two of strange beats!! Since these breaks in the MASTER usually occur at a bit of a lull so they can be disguised with some FX. Also, I usually add a suitably named hot-cue a measure or so before where this happens in the MASTER track as a reminder.
I hope this helps and is clear enough to understand