Hi @Asmaa
As the feed has skipped the USD transactions, you will need to input them manually in the GBP alternative. So if (for example) you took $10.00 by PayPal, but PayPal has converted it to £6.40, you would input £6.40.
Each bank account can only support one currency. The way the new multi-currency features would work with PayPal is it will use the exchange rate based on xe.com and save it as the GBP value, so at least you're not missing any gaps.
I hope that helps!