Triplicate Forest and Mountain entries in the catalogue?

Since yesterday I see triplicate entries in the card catalogue for Forests and Mountains.
I mean. I see 6 Mountains under LEA 9 under LEV, 12 under MIR - three times the normal number of cards for each set.
No issue for the other basic land types. This is happening at the same the Audit Card and Image Data report shows Forest and Mountain numberless picture names are expected to have the number instead (as in Mountain1 instead of just Mountain).
This is not happening for all other basic land types.
Any clue?
I mean. I see 6 Mountains under LEA 9 under LEV, 12 under MIR - three times the normal number of cards for each set.
No issue for the other basic land types. This is happening at the same the Audit Card and Image Data report shows Forest and Mountain numberless picture names are expected to have the number instead (as in Mountain1 instead of just Mountain).
This is not happening for all other basic land types.
Any clue?