Thank you for your help. We exported the price list items with the old prices and changed the prices in Excel. In the Exel list we've got three columns: Product (name), Entity and Amount. We only changed amounts.
The new pricelist in CRM is empty and we don't have the option to import the Excel.
Hope you can help me with this issue.
Probably my question wasn't clear; we have existing products in CRM. Every product is linked to one pricelistitem, for example: Blue10 - SME: 50 doc/mo = € 37,50. All pricelistitems were active untill 31-1-2022. Since 1-2-2022 we have indexed our prices, so the same article is now € 38,78.
The products aren't changed, so we don't want to copy our products. We only need to update the prices for 2022, so we need for every product a new pricelistitem. Next year we will index our prices again. By keeping the products unique and only change the pricelistitems, we can see the price changes over time and report (powerbi) on closed deals over time with the prices per period. Over time we will have a pricelistitem per year on every single product. Hopefully my question is more clear with this explanation...
Thanks again!