Film Negative tool update in 5.8?

Hello everyone,

I’ve been using RawTherapee to digitise my negatives, and whilst one or two sometimes prove to be very hard to get right I’m really happy, so thanks for the great tool!

I had an issue this week where RT didn’t open correctly (exe ran but no window opened). I thought I’d simply reinstall it. However I somehow must have a version mismatch this time around? The edited pictures still have the values stored in their corresponding .pp3 sidecar and RT reads the settings too - all but the negative tool, which has a few sliders less now.
I’m a bit confused since the last time I installed RT was on 15 July '21 and I thought that there was no new stable release in the meantime? Both versions are 5.8 but I don’t remember the exact build number of the previously installed one

Anyway, if someone has a formula/knows what I need to add or subtract from the right values to get my colours “back” I’d be very glad. I stupidly had not processed all images as I wasn’t happy with all of them yet and thought I’d tweak them a little at a later point and would be very glad if I could get them back to where they were in a reasonably short amount of time!

I’m attaching an image of what I mean:


left is the current view in RT, right my last export

I hope someone can point me in the right direction, many thanks!
Geoffrey