Offline mobile apps require Dynamic Container to use frameless Single Document mode
Valid from Pega Version 7.1.7
You can add a Dynamic Container (DC) directly into a Dynamic Layout cell. When creating a custom mobile app with offline capability, you must use the frameless Single Document mode of DC.
Note that mobile offline capability does not support using a framed Single Document mode.
Data entered in a new harness is lost after a sync operation
Valid from Pega Version 8.1
If you create a case in an offline-enabled application and enter data in a new harness, this data is lost after you click Offline capability and Enabling offline support for cases.
and the sync operation takes place. For more information, see