It depends on the EA, how is coded and if it uses a magic number in order to manage its trades.
EAs must be coded to recover.
If the power fails, OS crashes, terminal or chart is accidentally closed, on the next tick, any static/global
ticket variables will have been lost. You will have an open order but don't know it, so the EA will never try to close it, trail SL, etc. How
are you going to recover? Use a OrderSelect / Position select
loop to recover, or persistent storage (GV+flush
or files) of ticket numbers required.
On a network disconnection you might get ERR_NO_RESULT
or ERR_TRADE_TIMEOUT. There is nothing to be done, but log
the error, return and wait for a reconnection and a new tick. Then reevaluate.
Do not double post!
I have deleted your duplicate post.
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