Increasing Quantity via CSV Import Magento 2

Question

We are working heavily and daily with the Magento 2 CSV import. We use something like this

"sku","qty"
"12345","100"

In this case, the qty for 12345 is set to be 100.

The next day I would like to upload something like this:

"sku","qty"
"12345","5"

The problem now is that 12345 will have 5 qty, and not 105 or ar at least 5 + (100 - sold qty).

Is there any way I can increase the quantity with the upload file?

Thanks

Answer 1

if you don't mind using third-party tools, you can use the Store Manager software and i think there must be an expression formula to add qty the way you need at the step of import