Is there any chance for our private keys getting stolen when we import them in a possible rogue BitcoinABC wallet?
Yes. And there is a chance for losing your BTC due to replay attacks.
Although it uses the Bitcoin ABC software, Bitcoin Cash seems a bit shady to me.
We know CSW needs Bitcoins, which is the reason to pretend to be Satoshi. It would be a great plan to steal a lot of Bitcoins by releasing a malware... Be careful!