13 Replies Latest reply: Sep 7, 2010 3:38 PM by Googleperplexed
sparky67 Level 2 Level 2 (315 points)
I added about 6 events to the calendar on my iPod.

When I sync'd to iTunes, the iCal on my computer stayed blank. So I checked the iPod and that calendar was wiped out and replaced with the one on the computer.

Syncing for iCal seems to be one-way only!

(2) Mini 1.66 Ghz Duo Core • MacBook 1.83 Ghz Duo Core, Mac OS X (10.5.8), (2) B+W G3/500 • Gigabit G4/1.6 Ghz Dual • iPod Touch 32GB 3G
  • 1. Re: iOS 4 iCal sync wiped out my calendar
    Sebastian Truffaut Level 1 Level 1 (20 points)
    I have a similar problem

    I have two computers and an iPhone and I use the iPhone as the conduit through which I keep the computers in sync. It worked for 18 months, now it doesnt. The iPhone calendar will always be replaced by the computer calendar even though I always choose merge.

    What has changed in my set up over the past couple of weeks is going from 10.6.3 > 10.6.4, updating to iTunes 9.2, and getting an iPhone 4 with iOS4.
  • 2. Re: iOS 4 iCal sync wiped out my calendar
    Bugante Level 1 Level 1 (0 points)
    Same problem here. As a Mobile Engineer I use my iPod Touch to store appointment info. Periodically I backup to iCal on my MacBook. Normally I get a message advising I'm changing more than 5%, and asks if I wish to continue. However on my last attempt no such message. As the Sync began, it looked and felt different, so I cancelled. But it was too late. The last 3 weeks of data was wiped from my iPod, as well as upcoming appointments. Massive problem.

    The only change I believe I've made since my previous Sync is: upgrade to iOS 4.
  • 3. Re: iOS 4 iCal sync wiped out my calendar
    Jim Gilland Level 1 Level 1 (5 points)
    I'm in the same boat. I sync my Touch to my work computer, I get all my events from that iCal. I then sync to my home computer, hit the "Merge data" option, and everything that's on the work computer disappears from the Touch, and doesn't show up on the home computer. Go back to the work computer, and it's back.

    This all worked until I loaded iOS4.
  • 4. One Way sync issue
    Googleperplexed Level 1 Level 1 (5 points)
    New appointments I enter on my Touch won't show up in iCal.
    If I enter in iCal it shows up on my Touch.

    I have found many appointments on my Touch not showing up in iCal.
    All this time, probably since upgrading to 4.0, I have been syncing I have trusted that
    the Calendar from the Touch to iCal was backing up.

    One other issue I noticed as well. Since the upgrade every time I enter the Calendar from my Touch
    their is a delay before it loads.
  • 5. Re: One Way sync issue
    JDake Level 1 Level 1 (0 points)
    Same issue here. I used to keep work and home calendars synced with my iPod, but now it's a one way street. Seems the merge function is broken. I'm glad that I'm not crazy at least...but this function is definitely worth going back to iOS3. If anyone has a solution, please let me know!
  • 6. Re: iOS 4 iCal sync wiped out my calendar
    Bertold Durst Level 1 Level 1 (0 points)
    I found and tested in another thread the hint to restore the iPod touch. It helped.
    All my data are automatically backed up and restored (tasks in ToDo as well as music, calendar etc.)
    Now the sync functiones as expected in both ways
  • 7. Re: iOS 4 iCal sync wiped out my calendar
    JDake Level 1 Level 1 (0 points)
    I restored my iPod, which restored some normal function to the syncing of calendars. But, I used to be able to sync 2 iCals, one at home and one at work, with the iPod, keeping all three of them in sync. This is still not functioning. Any other ideas?
  • 8. Re: iOS 4 iCal sync wiped out my calendar
    JDake Level 1 Level 1 (0 points)
    Somehow I feel like it's an issue with the "merge" function on iTunes. If I create an event on my iPod and immediately sync it with one computer, the event is transferred/merged from iPod to computer and computer to iPod. If I then take that same iPod and plug it into my other computer, the second computer writes over the entire iPod calendar, even when "merge" is selected. Even the event I created previously that transferred to the first computer is deleted.

    Then I decided: well I could merge my work calendar from my work computer, and merge my home calendar from my home computer, and at least try to keep those synced on the iPod. But when I deselect any calendar in iTunes, it then deletes that calendar from my iPod as opposed to just leaving it as is. Bizarre...?
  • 9. Re: iOS 4 iCal sync wiped out my calendar
    sparky67 Level 2 Level 2 (315 points)
    I figured out a simple solution...

    When I first synced, I had it set to "all" calendars... this caused the original problem I posted here.

    Next time I selected my calendars individually... I checked the boxes next to "home" and "work"... it synced perfectly then.
  • 10. Re: iOS 4 iCal sync wiped out my calendar
    Jim Gilland Level 1 Level 1 (5 points)
    I've always had my calendars synced individually. Works on one computer, but the other one overwrites the iPod, whether I have it set for "all" or selected.
  • 11. Re: iOS 4 - One Way Sync issue     UPDATE to previous post
    Googleperplexed Level 1 Level 1 (5 points)
    The problem persists after installing iTunes 10
  • 12. Re: iOS 4 iCal sync wiped out my calendar
    wmm5 Level 1 Level 1 (0 points)
    sparky67 wrote:
    I figured out a simple solution...

    When I first synced, I had it set to "all" calendars... this caused the original problem I posted here.

    Next time I selected my calendars individually... I checked the boxes next to "home" and "work"... it synced perfectly then.



    I found your solution worked perfectly, even under iTunes 10. Strangely, none of my new synced data would show in my calendars after syncing with the cloud(MobileMe) using wi-fi. Even with wi-fi Turned Off, as soon as I unchecked all calendars, and started adding one calendar at a time, the data mysteriously appeared. Apparently it was downloaded, but does not refresh and display until I checked one calendar at a time until all the current events displayed.

    Thanks for your tip!
  • 13. Re: iOS 4 - One Way Sync issue     UPDATE 2. Now it works
    Googleperplexed Level 1 Level 1 (5 points)
    Well I called an Apple rep and while troubleshooting performed another Sync and all the accumulated iCal appointment entered on my iPod Touch magically displayed on my Mac's iCal software.
    Unfortunately the Apple rep had no record of a One Way sync issue so the only two conclusions I can manage for now are:
    1) I called the iMagic Rep at Apple
    2) even though I performed a sync after installing iTunes 10 recently and iCal still was not syncing with my iPod Touch I may have rebooted my Mac since that test thus resulting in the situation resolving itself.

    If you have this issue try installing iTunes 10 then reboot your Mac then Sync you iPod Touch with your Mac. Hope this helps someone.