Update stock quantities of existing products import does not work

Hi,

I am having problems updating existing products with version 12.0.2. PHP 7.4.0 MYSQL 5.7.28 I’m hoping this information might help us to fix the problem.

This is a copy of the CSV file I am using to update:-

This is a picture of Step 4

This is a picture of Step 5 with Product as a reference

Run simulation and no error

Press “IMPORT DATA” and says it is successful

When I look at the items it does not show any stock. Picture of the first line item below:-

When I try to export CSV as below

I cannot export in any format as below