Carrier wrong since update to 1.7.8.8

[siwa_llamplmair]

Hello,

I recently updated my shop from 1.7.1.0 to 1.7.8.8 and I have a problem with the carriers since then. 

If i want to update the carrier in an order placed before the update i cannot longer select the carrier I want. Instead one carrier which should not be selectable appears. As seen in the screenshot "Österreichische POST" is chosen for the carrier and if i want to change the carrier or simply add the tracking number i cannot longer select "Österreichische POST", only POST EMS which is a carrier which is disables for the products in the order.

I already tried to resave the carrier but this did not change anything. In the products and customer groups the carriers are assigned correct.

Has anyone a suggestion what could be the problem here and how to solve it? This is a big issue because i cannot update the carrier or add a tracking code. 

Thank You!

 

Edited February 9, 2023 by siwa_llamplmair (see edit history)