Products displaying wrong markup percentage in Price Books

Problem

Some Products added manually to a Price Book would show with a wrong markup percentage (different from what is showing on the Product Page). 

Setup

• Retail POS for Mac or PC

Solution

CSV

1. Navigate to Catalog -> Price Books
2. Click on the Price Book in question
3. Click Export Price Book
4. Save the file
5. Go back to the above-mentioned Price Book page
6. Click Edit Price Book
7. Click Choose file to import the previously exported CSV file
8. Click Save Price Book

Manual edit

1. Navigate to Catalog -> Price Books
2. Click on the Price Book in question
3. Manually change the markup to the correct one