Hi,
with my app, mappings to iterator roots (e.g. ListItems) vanish, each time the project is closed and re-opened. Individual fields within a row are not affected.
The problem most likely causes a single row to be shown despite many rows being available and returned by the service.
This problem is kind of nasty, as it may not be immediately apparent within Tiggzi generated code and there are about 5 lists within my app (and counting).
Could you have look into it the problem?
I've copied my app to MappingBug (should already have been shared with a href="mailto:support@tiggzi.com" rel="nofollow"support@tiggzi.com/a by now), stripped down to a single page and REST echo enabled in order to avoid interference with actual app development.
Here the steps to reproduce the problem.
You may as well chose to watch a 2 minute screen cast at
https://rsaddey-carano.s3.amazonaws.c...
Open MappingBug project in GUI builder
Test app
Press Search
One item is shown though 4 are expected (as set within echo data)
Open page, switch to data view
Add mapping to iterator root (from $ to ListItem)
Save app
Close app
Re-Open app
Mapping added above is gone 
Now the nasty bit:
The defect may not be immediately visible as it requires Tiggzy to re-generate sources.
This can be triggered by an arbitrary change to the screen design, e.g. adding a dummy label.
Thanks for looking into this,
Reiner