no, if you post on Steem blockchain it will not appear on Hive. Everything you had previously posted on Steem up until the moment of the hardfork is on Hive. But after the hardfork, posts only appear on Hive if you post on Hive. This appeard on Hive so you must have posted it on one of the Hive front ends e.g. hive.blog or peakd.com. If you are not already using peakd.com that is definitely the best Hive website (it is the rebrand of Steempeak.com for Hive). At the beginning everything is pretty much like Steem, that may change over time as new development happens on Hive.

As far as autovotes, if you had some autovotes set up on steemauto.com, that site has been duplicated for Hive with all the previous settings so yeah your autovotes would still be happening. The new version of steemauto can be found at https://hive.vote/ , you can go and adjust your autovotes there if you want.