Notes to Google to iPhone

This is what I am doing; it was working earlier, but stopped working now. I don’t know why.

Select 1/2 month of calendar entries

Export it as an ics file

import to google calendar

I have my iphone setup with CalDAV account

Open my iPhone calendar (from home WiFi), which automatically synch my calendar

This worked for 3/4 days

But now when I import to Google Calendar, it just import " 1 or 2" event,

Still I don’t see anything in Google calendar.

Any suggestion will be appreciated.