Is there a possibility to define the SIM-Card for mobile data?

I use the latest Lineageos 17.1 version and everytime I restart, the system uses the wrong SIM-Card for mobile data-connection. It doesn't help to swap the cards – I tried it already. I know, you have the possibility to define, which SIM-Card should be used for calls, sms and yes, mobile Data. But it doesn't work. I activated in the Data-SIM-Card this option, but when I switch from WLAN to mobile, the system tries to use again the wrong card. Looking into the options of the Data-SIM-Card it...

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