It's been maybe 10 years since I last used SVN so I don't remember exactly, but it was related to moving commits between trunk and maintenance/feature branches

It's been maybe 10 years since I last used SVN so I don't remember exactly, but it was related to moving commits between trunk and maintenance/feature branches and back. I managed to mess up whole repository few times. It might have been my own ignorance though, I was a fresh junior at the time. On the other hand with git I had less issues related to merging, after playing for couple of hour it just all made more sense.