Hi @Phill, currently there is no automatic method, although it would be nice.
If you’re using Stacks 3.x you can designate a new Folder and copy each stack you use in a project so that you can quickly access them, but you will have to go through each page to determine what you have used. I believe @joeworkman did a video on this entitled Foundations 1.5 & Stacks 3.
Secondly, if you are using RW 6.3.x (Maybe older) there is a Notes feature, which you could manually write details of what stacks you used, again, going through each page to record what you used.
Lastly, you can create a txt file that you can make notes in for what stacks and settings you used… again going through each page.
A bit of a PITA I know, but for future projects you now know the options.