I need help regarding with my session.
It's best to email
chipmixer@protonmail.com (it's a good precaution never to trust third parties (such as me), always verify the email address on the actual website).
for ex. when i need it on an other wallet to gather funds, then should i sweep or to just send the keys to the other wallet
just the option which gains more privacy preferentially in relation to funded coins which comes from chipmixer.
Each new wallet means an additional risk of compromising private keys. I would only import private keys when I'm ready to use them.