TF Mobile makes MU data available offline by caching the associated data. Syncing an MU copies any updates made in the field back to TF and also updates the cached data on TF Mobile with any changes made in TF since the last sync.
A summary of the pending changes is shown in the upper-centre of the main TF Mobile screen. Here we can see that there are two pending changes and the last sync was 4 days ago.
Press the Sync button to sync all MUs. The status (e.g. success) of the sync will be shown.
Changes made in the field (including and recorded tracks) will now be visible in TF.