Questions about Sandboxie settings

I am fairly new to sandboxie, and would really appreciate if someone could answer some of the questions I have.

1. Does the browser inside of sandboxie have information such as login info of the accounts I have logged on in the same browser outside of sandboxie? In another word, is it safe to open firefox inside sandboxie when I have logged onto gmail and other social medias on firefox outside of sandboxie? Should I worried about some piracy software …

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