The Salesperson field and Reference# field in a Sales Order do not flow through to the Work Order and Invoice.  What's the point of the field if the information doesn't flow through??  It's not like the Referene# (which in the U.S. is called a Purchase Order or PO) changes from SO to Invoice so we have to manually add it to the Invoice which opens up avenues for mistakes.  

A custom field can be added for each and that will then flow through.  We did that but the original Salesperson and Reference field are not able to be removed from the UI so they are just there.  How do we get people to use the right field and not the wrong one?  We're going with luck and hope.  

If Zoho could please address this nonsense that would be great.  There's no reason for a custom field if the standard fields would just flow through.  But if that's too difficult, at least let us hide them or delete them all together.  Once again, Zoho's rigidness strikes again.