I am currently creating a project using only blueprints. As the project progresses, we want to release new engine versions and apply them to past projects. I am using blueprint only because I can not handle C ++ code. Is there any problem if I right click on the executable file and modify it to ‘switch unreal engine version’? Past experiences have sometimes had problems or not.
Hi,
You can just open the old project file with a newer engine version it will create a copy of your project.
Updating to a newer version can cause problems or even not work in some cases but you still have your old project.
Usually, it’s not a problem when you don’t skip a lot of engine versions at the time.
(also create backups 
)
Thx, frd