https://www.wikidata.org/w/index.php?title=Q65767088&diff=1539501660&oldid=1513423857 with this
https://it.wikipedia.org/w/index.php?title=Pietro_I_di_Tarantasia&oldid=124357216
The article does not say that the prelate died in Moûtiers. His actual date of death is not known. The Italian article which copy-paste the French version only includes the information that his body could be in the cathedral and not his place of death.
I also canceled a modification on (Q3079827) in which you indicate the places of birth and death when no source really indicates this information.
The Polish article does not provide any source in this direction.
Regards