At the moment, if you have POL imported into your Koinly account, you should change your POL to MATIC. You can do this by editing the transactions manually or using the Change Currency feature below:
https://support.koinly.io/en/articles/9490042-change-currency-if-koinly-imported-the-wrong-token
So all the POL transactions should be seen as MATIC in Koinly to ensure a smooth migration in the future.
We will be issuing further updates on the migration and once MATIC>POL migration is final on our end.