Well over a Decade ago I complained about this very same issue in a game called Everquest? over a Decade ago? they fixed it...
That is why I am so perplexed that here we are with a brand new Persistent Online World game in 2014-15 with what I would hope & assume was built on much newer/better technologies? & I'm having to re-summon & re-buff every time I ‘Zone’!?! LOL!.
if they can eliminate this over a Decade ago in EQ? you sure as hell can in ESO today! let alone shouldn't of been like that in the first place...
For example, my Sorc right now has two summoned pets & two toggled buffs(PS4). that's four things that need to be constantly re-casted every time I ‘Zone’.
Again, over a Decade ago they eliminated that foolishness in EQ... c'mon ZMO...