Book GM++ and Reference books

[Mag]

I have a question. Can the books I mentioned, i.e. Book GM++ and Reference books, be converted into a pgn file. Of course in the program HIARCS Chess Explorer Pro.

[Mark Uniacke]

The books are in a completely different format and the PGN format could not represent the data properly.

[e4-homie]

For GM+ Opening Book subscription, does the user lose access after the subscription expires or do they retain the information up to that update?

[dixondeuxyeux]

I believe the information is saved up and until the subscription ended. Which for me was fine since we are really talking about a difference of a few percentage points. But maybe over 10 years new ideas will change certain evaluations. Who knows? But it should still be a good reference point. M