Most data has disappeared from form view. Shows up for print preview.

Most data has disappeared from form view. Shows up for print preview.

Hi

My forms show empty of data.  I enter the data, when I revisit the form it has disappeared. When I do a print preview, the data shows that it is there and prints.

Can you please help me work out why the data does not show in the forms?  It was showing a coupe of weeks ago. The screen shot shows the inventory form, empty and with data in print preview mode.

Thank you
Jonathan