Hello @lazarlubomir , no problem at all, happy to help! I wish I had better news for you. We are able to read them (as mentioned) but not freeze them on the writing side. So, we currently do not support this. I saw a similar idea for this as well - it may be worth adding a comment there explaining why you'd like to see this functionality added or posting your own idea.
Currently, we have an option on the Autodesk AutoCAD DWG/DXF Writer to 'freeze' a layer (see image below), but that only takes effect when viewing the "model space" of a DWG file, not the "paper space" (which is what you're looking for).
Best, Kailin