in a new DF20 project I would like to use some DF19.x library projects. These library projects contains only pure DF code (no web component or html) and I am currently using it in DF19.0 and 19.1 projects, the codebase is the same but I have two sws files, one for 19.0 and one for 19.1 . The new DF20 uses unicode so I would like to understand if I can share the codebase of my DF19.x library project with new DF20.0 projects exactly like I am doing between DF 19.0 and 19.1. Will the source files converted to unicode by DF20 and so will they not be usable under DF19.x anymore?

Thank you very much, kind regards