VEN to VET 1:100 swap creating a gain/loss can’t be correct?

Describe the problem:

Hi, looking for some advice

Regarding the VEN to VET (1:100) token swap

I have a transaction showing 6007 VEN (cost basis £20,000) , and this converted into 600,700 VET

Problem is when I merge them together as a “swap” it shows the cost of The 600,700 VET as like £9000 (cost of them vet tokens that day, not my original cost. Giving me a massive loss -£11,000

Surely this isn’t correct? There shouldn’t be a gain or loss? Shouldn’t it just show the new 600,700 VET tokens at a cost of £20,000 like my original VEN?

There’s no way to edit it, I’m confused

Please could you advise. This is my only issue I have come across so far and don’t know what to do/how to rectify?

Which exchange/wallet is this regarding?

Both private wallet and also Binance

How did you import data into this wallet?

What have you tried to fix this so far?