as far as i learned, [SOL2] is needed to work with SOL 2.0 and above, [SOL] only isn't enought to work properly.
To be honest i always leave as they are because (on my side) they never create me problems, but for sure they can be improved (but who has the time to try all the time, it's a miracle that i can spend my free time on santurday and sundays and be able to release things thanks for help of others
)
Theorically they can be deleter or not inserted at all because (at least on my side) nothing big changes, but i leaved them all the time because (like for the flags you reported) CSP works in strange ways that can't be predicted sometimes
this is how it looks in game for me
View attachment 1109169