When viewing the merchandise report for a certain day and comparing it to merchandise sold on the Total Revenue and Payment Report and Sales Report, the totals may not match. The Total Revenue and Payment Report and the Sales Report merchandise totals both match.
This was resolved in the latest release of Altru.
Steps to Duplicate
Click the Merchandise tab > Merchandise Sales Report
Filter on All Vendors, All Sales Methods, Group by Department the affected date
Note the Net Sales total amount for the affected category
Click the Revenue tab > Total Revenue and Payments Report
Filter on specific date: choose the affected date, All users, Report type summary, sort by date
On page one expand the affected category under merchandise > Select the hyperlink for affected refunded order
Select the hyperlinked price on the refund page > See that items were refunded.
Note the net sales total for the affected category, and see it doesn't match Merchandise Report.
Click the Sales tab > Sales Report
Filter on a detailed report type, all sales methods, for the date affected date
Under Merchandise note the net sales total amount for the affected category. See that it doesn't match Merchandise Report.