REgarding your product descriptions:
I can see your descriptions are correct.
Everything related to Products are polled from the database (except for images that can be from database or file system at your choice).
The TPL files are used to output the design on screen, and unless you have accidently modified how they should output the information without knowing what variable was modified, they have nothing to do with this case.
If you did alter in any way a TPL file without knowing what you were doing, just overwrite the TPL file with the original one.
Good Luck.
