SAP Screen Personas - Enjoy transactions

Hi,

Has anyone got experience with transactions like ME51N (create purchase requisition)?

I'm having difficulty with the various subscreen open/close states, i.e. getting them to stay open, and also simply merging fields from various tabs in the item subscreen. It won't seem to let me refresh the subscreen after I've enabled caching of the tabs.

I've read a blog that states Personas plays nicely with enjoy transactions, but so far thats not my experience.

any tips and tricks would be great thanks!

Neil