Heightened senses werebear part does not refresh if you go into human form and then werewolf. It does refresh the other way around though
Further testing only got me more confused, apparently I get a buff that grant damage reduction and movement speed but lose the other damage reduction from heightened senses when doing as above, I think whats happening is the doubling of the damage reduction part of the passive gets removed when transforming to werewolf from human but not when transforming from human to werebear 