I am working on a project from two different computers, one of them being located in a school - the program cannot be updated due to administrative restrictions. If I import the .0f3 (school computer) project to .2f2 (home computer), will I be able to go back in forth between the two versions? Alternatively, is it possible to set the .2f2 engine to keep saving the project in its original format?
Except for probable differences in the Unity Versions (bug fixes, API behaviour changes), there’s no reason not to import the project with a different version. If you must know, in the ProjectSettings folder of your project is a ProjectVersion.txt. If you adjust the contained version to the Unity version you want it to open with, you’re not even asked for reimport 