It never 'dawned' on me that the grout will get glazed, permanently, in the reglazing process.
Questions: If one was to 'dig out' the grout BEFORE reglazing, do you simply regrout after the reglazing? Or, would glazing/reglazing the inside 'sides' of the tile (where the grout use to be) prevent the grout from 'taking hold'? Neither of you mentioned this 'step'. I guess I'm trying to get the 'look' of new tiles, grout and all.
I'm sure that you don't want to reglaze, then dig out the grout, then regrout. This 'idea' would probably reveal 'uneven edges' of tile on the newly glazed surfaces. What can you say 'bout my 2 questions (above)?