I originally started using Sketchup 2015, most of my files are in that format. Sketchup 2015 came with a 30 day trial and after the trial it reverted to the a free standalone version. Unfortunately, I assumed that 2018 would do the same and I modified and saved a couple of files in the 2018 format. Recently, the 30 day trial lapsed and I can no longer access those 2018 files. I’m really not interested in the free web version of 2018; is there away to convert the few 2018 files back to the 2015 format?
Also, does Sketchup 2017 revert to a free standalone after the trial, or it it also a web version?
Any help would be appreciated