YES.
Basic rule is anything in your logbook is counted as flight time including ICUS and if you are working for a commercial operation even days when you were on duty but didn't actually fly count toward your flight and duty limitations.
Flight meaning time in the air and
Duty meaning time during briefing,planning,preparing flight administration etc.
****** if you dont fly for days but are doing duty then get the opportunity to fly for 6 days straight but cant because your duty time doesn,t allow it.
Hope this has been explained well enough, almost confused myself there.