How can I link transactions?

I did not find any possibility to link the transactions (between two accounts with the same currency or with different currency) imported from the account statement. For new transactions added manually it is easy, but for imported transactions, when I select for a transaction, "transfer" to the source account appears duplicated in the destination account (one imported and another added automatically when I select transfer). When you have a few transactions you can delete the duplicate transaction, but when you have hundreds it is impossible.
I encountered this problem because I imported transactions from a 4-year-old account statement and for example I have transfers from "Ing Bank" to Revolut. "ING" records the transfer date differently than Revolut and the description of the transaction differs between ING and Revolut. Automatic matching does not work in this situation.
The problem could be solved if the transactions had an index in Home Bank and the possibility to manually indicate the match according to the index

I have 4 accounts in 2 currencies, between I make transfers. without the possibility to link the transactions it is impossible to track the transfers.

The problem arises that if you do not link the transactions between them, they appear erroneously as the expense in the report on the account from which the transfer is made.

Thank you!