When the calendar is updated the auto-relaunched tasks launch gets recalculated for next day causing the current tasks not to be executed the day when the calendar change was made.
As it was previously described on the documentation below:
Case B2: If the calculator is outside the previously calculated launch window (with the previous values of the Task): The calculator goes this way:
• Case B2a: The new calculated launch is in the future compared to the actual date and time: In this case a new launch is scheduled.
• Case B2b: The new calculated launch is in the past compared to the actual date and time: In this case no launch is calculated. The calculator will be woken up to schedule a new launch at the end of the new Task’s launch window.
Auto-relaunch Tasks were considered as launched by the Calculator therefore they were removed after Task's Disable / Enable or calendar's update.
Update to a fix version listed below or a newer version if available.
Dollar Universe 6.9.61 - released 15th January 2019
Auto-relaunch task job can be rescheduled properly after disable/enable the task or update the calendar.