I recently installed ClassicGooglePlay_3.70.20_1140_release.apk over the link in Menions posts from Gdrive.
My autobackup then included all my vectormaps, about 40gB. Took ages to finish offcourse. I normally have around 260 mB as backup size.
I found out that in the backup settings there is a new option to include these maps.
I am sure I never selected this because the option was not there in 3.70.19.
I think a new release/bug version should not pré-select such an option!!
I see now there is a new version 3.70.21 Is there a version report somewhere? Thank you.