How to continuously append live table to table?

I have a situation here:

every month there will be a table (with 3200+- entries) that should be
appended to a Year-to-Date table.

I appended the second month's live table to the accumulative table,
but don't know how to do it for the third month, other than deleting
the live table temporarily and import the new live table again.

is there a form or any other simpler and neat way for this? thank you
for your time.

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