Edit Vendor invoice transactions

	Changing the invoice date does NOT change the date or period posted
	to in the G/L.

	The approved amount is used in conjunction with the check printing 
	option of paying all approved amounts. 

	If present, changing the description does not change the detail description
	posted to the G/L. If needed that may be changed while Viewing/Editing
	the G/L account master screen. (Chart of Accounts Maint.)