I know I should know answer but..

[zoo2tycoon]

Have a reservation and might need to change dates. Dining reservation period would overlap
If I book at the 60 day mark from checkin but then have to change dates will those dining reservations cancel ?

 

[DL1WDW2]

Good question... I was wondering the same thing.

 

[Welsh_Dragon]

Have a reservation and might need to change dates. Dining reservation period would overlap
If I book at the 60 day mark from checkin but then have to change dates will those dining reservations cancel ?

You don’t need a resort reservation to make a dining reservation, so your dining reservations will not be cancelled, if you change the dates of your stay.
I hope that I have correctly understood your question.

 

[LeeLee'sMom]

resort reservations do not interfere with dining reservations.

 

[Marthasor]

No, if you change resort dates, your dining reservations will not auto-cancel.