Calendar not synching with Outlook

I'm still running my Z30 as my phone while I play around with my KEYone, testing out apps to see which ones I prefer, etc. I've added all of my email accounts to the K1, and can send and receive emails with & without attachments just fine (via wifi since I haven't swapped to a smaller SIM card for the k1 yet).

One problem I've encountered in the calendar is that A) I can't edit appointments that have passed (meeting runs long, I want to go back and change the end time, but can't edit it, whereas editing current or future events works fine) and B) if I make a change to an event or appointment on the Z30 or my PC, it carries over to the K1 calendar, but calendar changes on the K1 don't go to the Z30 or PC.

Can this be attributed to not having a SIM card in the K1? I don't want to go get one and switch my number over until I'm comfortable with the phone and it's working properly. Settings doesn't seem nearly as intuitive as the Z30, and I can't find anything that would indicate if calendar sync is one- or two-way.

I change, add, and delete all the time on my Keyone and it pushes to the online calendar with no issues and vice versa.

Is the time right on your K1? I find that the time defaults to GMT, unless it picks up local time from the SIM/carrier. Since you're not using a SIM, maybe the time is off, causing a calendar mis-sync? Just a guess.