Your statements are confusing to me.
> it says you are about to append 12 records
> records that were supposed to be updated
Are you appending or updating?
If you have a key field and the records have the same value in that field
they will not append as they would be duplicates which is not allowed.
> I am trying to do an update query but when I run it it says double the number
> of records in my table and when it updates the information, it updates the
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>
> Any reason as to why this could be happening?