When I switch to another character the waypoint disappears

[When I switch to another character the waypoint disappears]

I have no idea, but i have similar problems with triggers and scripts when i switch players to.

[Changing players/characters during SP]

I know at first this question seems dumb and I know this can be done by setting the units I wish to play to playable, However this method presents a problem for me. For a while i have been developing large scale single player missions 200+ units integrating air support armour and massed infantry on a large scale in a conventional warfare setting, which is what i believe ARMA is kind of for. The problem with this is that you get killed, a lot. Also its a bit of a shame if you only get to see one part of the battlefield so the solution was to allow the player to switch to other units taking part in the battle. At first just setting the units to playable seemed to be the perfect solution allowing me to scoot to other parts of the battlefield however this led to and unexpected problem that i didn't notice at first but has had me perplexed for a while now.

All the triggers that have been activated stop running when i switch players. This means music stops playing, Syncronised artillery stops working and the whole battle kind of starts to break down. I have looked hard for a solution but can not find one.

If anyone has any advice it would be very much welcome.

Thanks.