Thank you for your help. I researched this before and could not find the 2 references you provided. They were very usefull. It seems this problem has plagued users with no solution for many years. Well I guess as you noted the "solution" has been to generate a Report.
As far as the first link states: "This behavior also occurs if the DataEntry property of the subform is set to Yes (or if its DefaultEditing property is set to Data Entry in versions 1.x and 2.0). When you preview a form, you are opening it; because the subform is opening in Data Entry mode, it does not contain any data."
For the record & newbies as me: When DataEntry is set to yes allows in creating a new record and if set to no will not save any new record(s). However still can enter data, change data if record already exists.
I tried to switch to subform and main form to NO Data entry but the still no print preview (subform still blank).
So on to "Save as report"- great idea. Didn’t know you could do this. I created a command button to preview the report- but guess what – the report is now totally blank including the entire subform and now also the 2 combo boxes on main form are not listed. Only a label is shown. Maybe something I need to learn about reports? Or posssible now getting to what the real problem with my form preview is.
I have struggled with this problem for some time and even though not yet solved, this is great progress. Thanks for you refforts.