My application has several modules . It will go through major structural changes . so I need backup my application else where so that If I need anything from my previous version I use it . is making an OML file enough ? . what are ways to get my entire application clone or copied .
Right now it's not possible to clone applications but there is an idea and it's already on our outsystems radar. You would need to clone each module.
You can vote also to make it happen and say that this is really something "we" need.
https://www.outsystems.com/ideas/3064/clone-duplicate-applications/
Check this post where it answers your question, I think.
https://www.outsystems.com/forums/discussion/66415/how-to-clone-an-application/
Regards,
Márcio