1. Yes, of course you can keep your slaves.
“ . . . your title to your slave property is expressly recognized by the Federal Constitution as existing under your own laws, where no power on earth but yourselves can interfere with.”
And
“The true doctrine of the Constitution, the great fundamental principle of free government … is that every people on earth shall be allowed to make their own laws, establish their own institutions, manage their own affairs, take care of their own negroes and mind their own business.”
2. If your slaves run away and are caught – no matter where – of course they will be returned to you: