Doubt about file structure and BSA

[H1ms3lf]

Can anyone confirm or deny this:

So long as the ini is edited to invalidate, does the files inside the folders at the DATA folder take precedence over the files inside the .BSA? (Maybe .esm too?)

Or to be more precise and the longer explanation:

1 - lets say I take the textures folder inside the DATA, optimize, and insert all those textures inside the "Fallout - Textures.bsa"

2 - I would need to overwrite copies of the same texture that are already contained inside "Fallout - Textures.bsa"

3 - The textures that ended up being overwritten at step 2 do not matter, since the ones originary from the data folder were supposed to replace/take precedence anyway, is that right?
4 - Are there any (bad) side effects to that? Since the texture will be located inside the bsa and not inside the Data\textures (I'm assuming the game will always search inside the bsa if the file is not present inside the textures folder).

 

Thanks for any clarification!!

Edited November 17, 2015 by H1ms3lf