nope,
for the port which was going down the alert only will be sent once if max alert is set to 1.
If it goes up …
OH YEAH !!! 
the cause is the business_day macro … so it matches, then it doesn’t match, then it matches again …
it’s like port is down macro against a flapping port, it matches, it matches not, then it matches again …
so it’s every neẃ start of a matching business_day a new alert, even if the ports stays down over days
i think your wish “i want to be informed only in business hours” is a little more complicated and cannot be solved via macros as i see at moment
mmh alerting only in specified time windows has to be a written and included as Feature Request