Gross Profit Form Shows 0.00 Base Price Unless I Swap Back Combo value

[sakky]

Hello, I am pretty new with SAP and I have encountered a "bug" with some orders:

Some orders have GrossBuyPr = 0 in the RDR1 Line, If I go to gross profit form, I have the price list set as Article Cost but base price column brings a 0. Funny thing is If I swap the pricelist to another value and set it back to Article Cost, base price will be correctly shown for the column and I can update it then.

I am trying to code an addon to fix all involved orders, but changing GrossCode value on RDR1/ORDR tables won´t work, I can´t go to each document and manually swap it to show the correct Base Price.

Thanks in advance!