Update: I did call Air Canada and got my AC booking locator for future reference.

They confirmed that their flights had not changed - no change in time and no equipment change. They also changed my seating to a preferred location in the J cabin. The agent was very polite and helpful.

Then I logged onto the LH web site and looked at my booking. It is still showing a 15 minute later departure and an A319 aircraft instead of the 787.But it did show the new seats that the AC agent had switched me to!

I wonder what this schedule syncing glitch really means other than IT gremlins in the system?

Has anyone else ever had such a discrepancy when booking code share flights between the ticketing carrier and AC?