Resolve AR Account Reference.

server/accounting/qbxml/qbxml-receivables.js

@@ -249,13 +249,13 @@ const generateInvoiceQbxml = (
                   )}:${generateJobTier(jobs_by_pk)}`
               ).trim(),
             },
-            ARAccountRef: {
-              FullName: bodyshop.md_responsibility_centers.ar.accountname,
-            },
             ...(jobs_by_pk.class
               ? { ClassRef: { FullName: jobs_by_pk.class } }
               : {}),
-
+              
+              ARAccountRef: {
+                FullName: bodyshop.md_responsibility_centers.ar.accountname,
+              },
             TxnDate: moment(jobs_by_pk.date_invoiced)
               .tz(bodyshop.timezone)
               .format("YYYY-MM-DD"),