saguaros Sorry if I burden you with lots of questions here, but when I created a new theme for t3_bs3_blank using Theme Magic in J3.10.12, T3 put all files in local/less/themes/theme-name/ I assume to not have it overwritten in case there is a new update to the t3_bs3_blank template? Although more thinking in terms of T4 here as it's where I aim to go anyway.
But I have an other issue I have noted. I've done some changes in devmode to my theme's less files and it shows up, but when I switch off devmode and compile Less -> CSS the site goes back to how it was before. Also, I can't see any new CSS files being created/overwritten.
It reminds of a typical cache issue, but I have cleared all cache to no avail. What about T3-Assets? Does files there get recreated so I could clean it out in case there are some stale files?