OAW was originally built for online flying because unless the players in a game have exactly the same aircraft data the game will not launch. Countless frustrating hours were wasted while a player tried to find out what was wrong and fix it, or just leave.
So, apart from editing the "eaw.ini" file to give the same flying conditions, OAW was made to copy files from folders and paste the copies in the EAW directory when a folder was selected, and to delete these copies when it was deselected. This meant that onliners with the same set of folders could agree which ones to load before a game was launched, and the game was guaranteed to run.
The loading and unloading of files meant that it was no longer just a tool for onliners. It grew to be a very powerful file manager for all EAW users. Some of the errors that you reported in earlier posts were a good indication that you were not using OAW
