Godaddy and Gmail calendar synced with iCal across multiple devices. Calendar entries dropping off iCal after 60 days.

Across all of my Apple devices where I have the calendar synced, the entries from the GoDaddy CalDav calendar are dropping off after 60 days. The Gmail entries are dropping off my iPhone after 60 days, but are still showing up on my desktop. Is there a setting I can change so they don't drop off?