Are Omega Archive Extract and Museum Extract Omega the same thing?

Hello to all members, I ask you experts.
Is there a difference between Omega Extract and Omega Museum Extract?
I see and read watches that have one type of extract and others with that of the Museum.
is it a choice that Omega makes or do you need to go and request it in different places?
Maybe it's just a historical question? before they were documents from the Museum and now instead escaped from the Archives?
Thanks a lot and I hope I didn't write a stupid thing.

Sorry for my english!!
Adi