InfoPath Dev

I'm  wondering why InfoPath separates a rule in which I entered multiple conditions into separate rules?  In this example, the three conditions are "OR" conditions but I believe this same thing has happened when I have "And" or a combination of "And" and "Or".  Examples attached. 

I have an InfoPath 2010 form published to a SharePoint site.  Is there a way to maintain versions of the template form so that forms created with a previous version are always able to be opened? 

Thanks.  However I am getting this error message when I try to complete in Preview An error occurred in the form's rules or code. The number of rule actions or the number of calls to the OnAfterChange event for a single update in the data exceeded the maximum limit. The rules or code may be causing an infinite loop. To prevent this, ...

I need to delete the contents of a field when particular selections are made.  I was attempting to create a rule which lists the conditions then have the action be to set a field's value.  I want the field to be blank and I can't see how to do this. 

Exactly.  Thank you

I want to attach or insert a word document into an InfoPath form (becomes part of the form).  This word document may be used by the form submitter to print labels if needed.  Is there a way to attach this document permanently so it is available every time a new form is opened? 

Thanks again for your help Hilary.  I'll give it a try.  Could you possibly remove the template form from your last post?  I've saved it locally.  Thanks.

The fields which are populated from the secondary data source are those in the gray area.  The "filter" between the main and the secondary data source is the "ID" field.  Thanks very much for your help. 

OK.  I'm using 2010.  So when I am in Form Load/New/Action rule, which action do I select:  "Set a field's value" or "Query for data" or "Show the value of a field or formula"?

I'm pretty new to this so may not be using the best language to describe nor the best methods...    So I have text boxes and in the Text Box Properies window Default Value box entered a formula directing to a specific field in the secondary data source (SharePoint) filtered by the ID in each data source.  The ...