Windows 10 1803 upgrade missing Google bookmark

Hello,

I am currently upgrading existing Windows 10 users to 1803.  The upgrade process is using SCCM TS (Task sequence) upgrade.  No other changes has been made to the configuration.  Currently using Config Manager 1806.

After the the TS has ran and when user logs into Windows, their Google bookmark has been renamed bookmark(1) and replaced with the default bookmark.  Rename the bookmark has restored user's bookmark.  I don't know what is causing this and has added a little bit of concern if users are loosing their Google bookmark.  This doesn't happen to all users but a few.  We've just started the upgrade process.

Thanks