UTXOs should not be disregarded, but it is Trustwallet that is disregarding the dust UTXOs. You can send dust amount on Electrum wallet in combination as long as they 546 for legacy address or 294 for segwit or more (transaction fee not included yet).
Trust wallet doesn't offer a good solution to the UTXO dust problem, and it's even closed source. Avoid it. You will be able to sweep all the UTXO's with Electrum
This is very helpful!
So, sending the max amount on Electrum from the imported trustwallet address to newly created Electrum address with default transaction fee would solve the UTXO dust problem? Or do I have to adjust the transaction fee and the amount? And yes, I agree that I should move away from trust wallet.