Invoicing from multiple price lists

Hi,

I'm just starting to investigate the invoicing system on CRM 4.0 and I was wondering if there is a way to pull multiple orders (utilising multiple price lists) into one invoice.

I have had it suggested that we can change the 1-1 relationship to 1-many to pick up multiple orders, though I have yet to try it, and I was wondering if this would resolve the issue mentioned above.

My company is also considering moving to CRM 2011 for its obvious advantages, I am particularly intersted in the goal management facility, has the invoicing system changed at all in the upgrade?

Many thanks

Nikki