Whether this happens or not, the AOTC version of the salt-shaker kit works perfectly well.
Aside from the very small, very specific asymmetries and whatnot (as well as the pommel cubes, brass valve shape, etc.) that are unique to the TPM hero, 99% of people wouldn't be able to tell them apart at first glance.
The chromed resin dummies may have been used more in the film, but the (apparently refurbished) TPM belt-hanger was used for the reference photos, and so represents the "real" saber.
Also, remember that the TPM resin dummies got more screentime in TPM than the metal hero, too.
It is funny and interesting what different versions of these props represent the "real" version of the saber.