CheckWorkDataFilter
To make downloads to the mobile device more efficient, you can skip downloading any records that have already been downloaded, and have not been modified since the last download.
To enable this functionality, open the Mobile configuration and select the node. Set the CheckWorkDataFilter attribute to True.
The download process relies on two model properties when using this functionality: DeepSync and RecordLastModified. Sometimes you must add these properties manually. For example, you must add them to any models that you create if you want to include them in the work data filter. The data type for the DeepSync property is System.Boolean, and the data type for RecordLastModified is System.DateTime. The values of these properties are set internally, so you don't need to do anything other than adding them to your models.