So I checked every line to apply the << :U >> and so I make some procedure much bigger and now they aren't editable by the app builder and only with the procedure editor.
Another factor you should be considering to appeal to your users around the world is that new sales will become more challenging with a solution that uses a retired OpenEdge release from 2009, which means that it no longer receives bug fixes or security fixes and is no longer certified to run on current and upcoming operating system releases.
If I were you I would plan a migration to 12.x or 11.7; which one is appropriate for you as a first step depends on your platform needs and the list of de-supported features in 12.0. Notably, in your case, this includes the OpenEdge Translation Manager, though recently Progress has expressed the intent to open-source the tool so it can still be used and maintained by the community. If you use App Server or WebSpeed, this would also argue in favour of moving to 11.7 as a first step so you can then refactor your application to work with PASOE, which would then allow a future upgrade to 12.x.
As a side-benefit of either upgrade path, you could start using Progress Developer Studio (PDSOE), the new Eclipse-based IDE, and not have to deal with the file-size limitations that are now making you jump through hoops.