On Saturday, after the file changed to read-only again, I went into freenas and clicked on the storage dataset, clicked change permissions, left everything as they were but ticked recursive (it is set to windows, both owners set the same as 'admin'), and clicked ok, just like I did 3 hrs eariler. This time, It appears that the setting has been remembered as its now monday, i've been working with the program all weekend and it's not had any issues with the file changing to readonly.
The program is EasyPC (PCB cad), but the same happens with .txt files in notepad++.
Hopefully this will remain the case but if it changes again i'll update this thread. Is there any issue with having both owner (user) and owner(group) set the same?
Export recycle bin now exports the folder path of a deleted item(s), but not the deleted file(s) to a .recycle folder.