Because 95%+ of the time the card filter function does find the card. yes, every so often an issue like this does pop up that needs to be corrected. Yes, it needs to be an IR to unlock the set so the numbering can be corrected. I just tried to change to 1, 2, 3, etc., but the set is locked for that field. There are plenty of other legacy sets that look like this that get corrected as they get come across. I've made a bunch of these fixes over the last month or so myself.
Tired and trembling
I am descending,
will I have to stay here
and live this life again?