EIN change date

[jenae]

When an EIN is updated on my account is there a "change date" enacted where all activity up to that date is on the old EIN and the new activity going forward is on the new EIN?

[VanKalkerFarms]

unfortunately, I am not sure if changing an EIN mid year would result in a 1099 Pre change and a 1099 post change.  I think Square would use whatever is on file at the time the 1099 is created.