Merge field is empty (in body) for Print blank

[GC GYM]

I have a 'Membership Form' layout showing customer details which I print blank for new customers to fill out.

Problem is, I also merge some organization data onto the layout from global fields in a settings table e.g. branch, area etc.

That works fine for the merge fields in the header, but those in the body print blank (of course) when I 'Print Blank'.

Is there a way around this or can I not have my cake and eat it too?