Will the links fly out and is it necessary to put a redirect if from Cyrillic to Latin?

Question

Search Engine Optimization

Tell me , if the links were of the form:
site.ru/contacts
now we will convert to
site.ru/contacty
Links will not fly out?
Do I need to do 301 redirects to these pages?
Do I need to specify something in the webmaster's office?

Answer 1

All links will fly out and probably the whole site will also fly out of the index.
You need to redirect from the old ones to the new ones.

Answer 2

You don’t need to set anything in the webmaster’s office, but be sure to do the 301st page redirect.