So there actually is 2 Excel instances.
The first one at the top is "ExcelInstance" - this is the master file I need to past the data into.
Then the loop is set up with the following steps for each file in the folder:
-Renames "CurrentItem" from %Files% to "Extract"
-launches the file named "Extract" - this is "ExcelInstance2"
-reads the data from "ExcelInstance2" - stores it as "NJClass12020"
-gets the first available row from "ExcelInstance"'
-writes the data stored in "NJClass12020" to the firstavailable row in "ExcelInstance"
-Closes "ExcelInstance2"