Splits only visible on same key level

Hi, I just switched back from using the M+ Timer WA when I discovered that you support Splits now. But (at least on my end) the splits are only visible at the same key level. Is this intentional? I would like to see the splits from the previously highest key timed. E.g. I timed a +14, now I'm running a +15, here I would like to see the splits from the timed +14 key. I'm coding a little myself and would like to try implementing this on my own. It just would be amazing to get a few hints on where to start. Best regards Sidney