Serials uniform titles follow the same rule as series. When a title is qualified, it uses the latest form of the name during the lifetime of the title.
All titles qualified by: (Moscow, R.S.F.S.R.) will change to (Moscow, Russia) but titles qualified by a city that has changed its name may or may not change its title.
Okno (Leningrad, R.S.F.S.R.)
a serial which is still in publication; the title will be changed to:
Okno (Saint Petersburg, Russia)
BUT
Krasnaia letopis (Leningrad, R.S.F.S.R)
which ceased publication in 1937, will not change