Company closed or not operational

Hi,
How to classify transactions of a company that isn’t operational anymore.
Meaning tokens/funds are lost forever?
If i have a deposit transaction i can’t Tag it with ‘Tag as Lost’.
Should i changed or create a new withdrawal transaction and tag it with ‘Tag as Lost’?

Thanks
Shahar

After reaching out to support through email the answer is:
“You can create a withdrawal and tag it as Lost. Please also refer to the article:
Dealing with closed exchanges like MtGox, Cryptopia etc | Koinly Help Center

So i have created a new withdrawal transaction and set the tag to lost.