How to start new cycle (eg bulk charge) when attaching different battery

I’ve used my new ip67 successfully to charge my 100 ah and two 50 ah 12 volt lifepo4 batteries I use for trolling and occasionally to run a remote sump pump. However, this morning after attaching one of the normally discharged (probably 75% discharged) 50 ah batteries, the yellow light flashed a few times and then nothing happened. The app reported that it was still on the storage mode from the last charge. I’ve noticed before that it can take a few minutes before it recognizes that the battery state has changed (eg a different battery is being charged) and starts a new cycle. But this time I came back an hour later and it still was on storage mode.
In the past when this has happened it seemed that resetting the history triggered a new cycle to start. But I didn’t want to lose the history, so started fiddling with other settings – eg changing from 10A to 25A and back.
Nothing seemed to work, including powering down the unit, until I switched modes from Lion to normal and back. At that point the yellow light started flashing and a new bulk mode started at the full 10A.
This worked, and I can always repeat it, but I’m curious what the normal practice is when swapping batteries. Do people normally clear the history? I would have expected that I could save a battery name with the history for reference, but it seems as if the app is designed for use on a single battery rather than swapping, which is my use case.