Hello @tobiasgrimm,
After exporting to a CSV file, you should be able to import by clicking the import button you show in the image and then selecting the file you exported erlier:
Press the import button:
alejandro_e_0-1731089784614.png
Press the "Browse..." button and search for your file
alejandro_e_1-1731089801954.png
Select the file you have exported previously:
alejandro_e_3-1731089911938.png
Once selected click finish:
alejandro_e_4-1731089952324.png
You will see the modified values highlighted in yellow:
alejandro_e_5-1731089973392.png
Let me know if you can follow the steps described above or if you encounter any error.
PS: I am not able to see the files you mentioned as attached.
Alejandro