ashb commented on issue #38513:
URL: https://github.com/apache/airflow/issues/38513#issuecomment-6260695981

   > I’m not entirely convinced it’s a good idea to blanket-ignore those values 
for manual runs. It is plausible that some users currently use start_date to 
gate tasks from being run until a future date, which is what the argument is 
originally intend for. This change would be breaking for those users.
   
   Agreed, at this point, changing this behaviour is a breaking change. this is 
what i have used it for - adding a new node to a graph that MUST not run before 
a specific date. 
   
   > 
   > Maybe it would make sense to add a flag on dag run triggering to 
optionally ignore task-level start/end dates, but that’d be a noticeably larger 
change.
   
   I'm honestly not sure this needs changing now that it seems backfill already 
covers this use case?
   
   


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