A client notified us of a problem where some of their patient mobiles were going missing. We have not seen this for any other site to date.
If this does happen though, there is a utility which can scan the appointment book and fill in missing patient mobiles.
2. Unzip to a folder, ideally c:\medilink32bnt\Utilities\RestoreMissingMobiles
3. Backup your data, (especially Patient2.DB).
4. Run RestoreMissingMobiles.EXE and wait for it to finish.