Link Sage CRM mail merge quote to Sage 100 table

hi...

I need to add the extended description from sage 100 to be available when I do the mail merge in crm.  Does anyone know what I have to do to do this?...I am trying everything...and this is so important to the customer...thx so much

Customer is using Sage 100 Advanced 2013 with Sage CRM 7.2b

 

B