MPQ Steam cloud - "Cloud status" out of date

Unsure if this is an MPQ thing or Steam.  For last few weeks when I try to play MPQ on my laptop it tells me the Cloud save is out of synch.  It tells me the details of my main PC ansd when I last played it (which is correct) but tells me the save on my PC is not uploaded.  However this is not true.  On my PC it reports everything is correct and cloud sync is up to date.  As mentioned this has started happening in the last 2 or 3 weeks, I have played MPQ for over 4,500 hours and not come across this issue before.