So I finally made it work. Thanks to your guidance, I could never accomplish that without your help. Apparently, the reason it wasn't working was that in dicom.ini the variable MAGDevice0 was set like
MAGDevice0 = C:\conquest_servers\anon\Data\
whereas the actual data was stored in C:\conquest_servers\anon\data\ (no capital)
which is kinda strange, because I don't remember changing this defaults. If I did change it, I'm an idiot, but it is what it is.
Soo, pscp couldn't find the local files and transfer it cause %s was pointing in "Data" folder which didn't even exist, not "data" which existed and functioned.
Sorry for bothering you so much, man, but I got last one question. How do I correctly put submit2 command in ImportConverter? I want to make an anonymization server a DB-less router which receives studies via "--movestudies" command, anonymizes, submits and finally destroys it so it does not consume any storage. I have found examples of custom ImportConverters but they are mostly related to "ifequal" on modality plus "forward to" things. Could you please guide me a bit on the syntax?