Should be the same for the seats, Its only numbered like that because it always starts with 01,02,11,12,22,23 and so on. tho i dont know if you can alter them like the table numbers.
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Tried it and same thing for me. The only thing i can think of is there may be a table file some where, like the automatic prizes config file on the prizes tab. Check to see where they are stored on your computer. make a copy and try and alter it from there.
I cant remember how i did it but i did alter one, by renaming all the tables, so instead of table 1 it was something like "Johns Table" I put the names into the centre of the table diagram, unfortunately i lost it when my computer broke.
Try doing a search on the forum "rename tables" "alter Tables" etc I think it was in the Help me sectio