Discounts once made in sales receipte are visible correctly until it is not saved afterwards it is not that which was before saving the sales receipte ?

Hello,

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QuickBooks is not compatible with line item wise Discount on Invoices for the time being. Discounts can be applied to the entire invoice amount. 

In case you have some feedback to share about this feature, please directly submit it via QuickBooks by clicking the gear icon and choosing Feedback. That way, your feedback directly reaches our Product Development Team and helps us in improving your overall experience with QuickBooks.

I hope this helps!