Shower Door track

[newremodeler]

Is there a company that manufactureres sliding shower doors with tracks (wall and base)that will fit over existing wall and base tracks and frames? I'm doing a remodel and can't get the old tracks off. PO had the tracks glued on and everthing I have tried will not remove them without pulling the field tile off of the walls which would require me to completely retile the shower which is not an option I want to explore.

Any advice would be appreciated.

 

[Sulconst2]

maybe some heat and some fishing line?