Juniper Allegro CE Owner's Manual page 149

The files are now synchronized. The following screen appears:
Renaming Files
Renaming the files helps to avoid the unresolved notification.
Renaming is also an option available for keeping both altered files
when the unresolved file notice appears, to do this complete the
following steps:
1) Disconnect the Allegro from the desktop PC.
2) Rename one of the altered files.
3) Reconnect the Allegro to the desktop PC.
Both files can now synchronize.
Windows CE Page 4-89