Short answer : you'll be fine.

More elaborate answer : letting aside some rare mistakes, in France, trains not planned to run are not put on sales, as engineering works are planned well in advance.
Indeed there are some refurbishment works planned north of Dijon with some 8 hour daylight closures on weekdays (which is a rather significant annoyance in Burgundy) ane sometimes week-end closures, but the 7:22 (sometimes 7:21) Paris - Zürich runs as normal (as the line is to close half an hour after it goes through).