Hello All,

Our development team have investigated this issue deeply and we conclude that the field chooser is not affected by exporting to excel. What happens is that exporting to excel causes the data presenter to load all the records, including child records. Loading of the child records causes the second field layout to be created as well. Therefore when the field chooser is brought up, the second child layout shows up. In general this is not related to exporting to excel and was caused by the fact that the records was recursively traversed, and this generate the second layout and make it to show in to field chooser. In order to avoid this behavior you can do the following after exporting you can try to delete the layouts that was generated.

I hope this helps.

Sincerely,
Dimi
Developer Support Engineer
Infragistics, Inc.