Hi jfodge,

Sync issues such as these can occur on any OS and not restricted to Vista. There are a few possible causes:

1.  You can moved or restored the ODO.mdb on your PC thus removing the records after they were synced
2. You have changed your ODO User ID after entering records. Only records with the current ODO User ID will be synced to the PC. Refer to the FAQ section of them manual for fix up details.
3. You are syncing the PDA to a different ODO.mdb database then used for the ODO PC application

To try and resolve the issue try performing Handheld Overwrites Desktop sync for ODO to reset the data on your PC. If you have MS Access installed also open up the ODO.mdb and check what records are in the ODO and ODOCond tables and their User ID values.

Let us know how you go with these suggestions.

Regards

Stephen