Just checked on the MOT history site and the recall warning for the 1998 Mk2 is still showing advising to contact your Mazda dealer.
The Mazda Portal still shows a warning of a recall with no futher info as previous screen grab.
Just out of interest, in December I had an airbag replaced on my Impreza after getting a warning on the MOT history site. The local Subaru dealer replaced it, the letter from Subaru arrived before Christmas telling me of the recall.
I went on to the MOT site just before Christmas and the MOT site now advises no recal on the Subaru, therefore Subaru must have updated that specific VIN number on the Subaru recall system and that I assume has updated the MOT history system.