How to Reset Sync History in BusyCal/BusySync

BusyCal

If you're running BusyCal:

• Select Reset... from the Help menu.
• Click the Reset Sync History button. Wait a few minutes for the reset to complete.

BusySync

If you're running BusySync:

• Open the BusySync prefpane.
• Select the Reset tab.
• Click the Reset Sync History button. Wait a few minutes for the reset to complete.

MobileMe/iPhone

If you're syncing with MobileMe, you may be prompted to select an action. If so, select "Replace all data on MobileMe".

If the dialog above does not appear, you may need to re-enable MobileMe syncing in System Preferences > MobileMe > Sync. In addition, it is recommended that you overwrite the calendar info on MobileMe with the contents from your desktop. To do so, click Advanced > Reset Sync Data > and click the right arrow to replace the info on MobileMe with the info from this computer.

iTunes/iPhone

If you are syncing an iPhone via iTunes, you may have to reconfigure your iTunes sync options, as follows:

• Launch iTunes, dock your iPhone, and select your iPhone in the iTunes source list.
• Click the Info tab.
• Select the "Sync iCal calendars" checkbox
• Select the "Calendars" checkbox under "Replace information on this iPhone".
• Click Apply