Yes, it is very inconvenient.
I discovered that the flu vaccine rule does not work early on in my flu vaccinations this year. I am doing exactly what you said, checking the summary sheet at the outset of visit, or more often my secretary checks it first in our PM program when the patient arrives to tell me if they need it. Luckily flu vaccination goes on for a limited time, and hopefully it will be fixed by next year's vaccinations.