I still don't think that's it...I've included the SQL view creation code. The fields should be identical as both are originally derived from Sales Line before posting:
CREATE VIEW [dbo].[Healy Awards$vSales Transactions]
AS
SELECT dbo.[Healy Awards$Sales Invoice Line].[Sell-to Customer No_], 0 as [Document Type], dbo.[Healy Awards$Sales Invoice Line].[Document No_],
dbo.[Healy Awards$Sales Invoice Line].Type, dbo.[Healy Awards$Sales Invoice Line].No_, dbo.[Healy Awards$Sales Invoice Line].Description,
dbo.[Healy Awards$Sales Invoice Line].[Description 2], dbo.[Healy Awards$Sales Invoice Line].Quantity, dbo.[Healy Awards$Sales Invoice Line].[Unit of Measure Code],
dbo.[Healy Awards$Sales Invoice Line].[Amount], dbo.[Healy Awards$Sales Invoice Header].[Posting Date]
FROM dbo.[Healy Awards$Sales Invoice Line] LEFT JOIN
dbo.[Healy Awards$Sales Invoice Header] ON dbo.[Healy Awards$Sales Invoice Line].[Document No_] = dbo.[Healy Awards$Sales Invoice Header].No_
WHERE dbo.[Healy Awards$Sales Invoice Line].[Sell-to Customer No_]<>''
UNION ALL
SELECT dbo.[Healy Awards$Sales Cr_Memo Line].[Sell-to Customer No_], 1 as [Document Type], dbo.[Healy Awards$Sales Cr_Memo Line].[Document No_],
dbo.[Healy Awards$Sales Cr_Memo Line].Type, dbo.[Healy Awards$Sales Cr_Memo Line].No_, dbo.[Healy Awards$Sales Cr_Memo Line].Description,
dbo.[Healy Awards$Sales Cr_Memo Line].[Description 2], dbo.[Healy Awards$Sales Cr_Memo Line].Quantity, dbo.[Healy Awards$Sales Cr_Memo Line].[Unit of Measure Code],
dbo.[Healy Awards$Sales Cr_Memo Line].[Amount], dbo.[Healy Awards$Sales Cr_Memo Header].[Posting Date]
FROM dbo.[Healy Awards$Sales Cr_Memo Line] LEFT JOIN
dbo.[Healy Awards$Sales Cr_Memo Header] ON dbo.[Healy Awards$Sales Cr_Memo Line].[Document No_] = dbo.[Healy Awards$Sales Cr_Memo Header].No_
WHERE dbo.[Healy Awards$Sales Cr_Memo Line].[Sell-to Customer No_]<>''