No. A test credit is used when the test’s data is retrieved from the T.O.V.A. USB device and saved to the database. Once the test has been saved to the database, it can be viewed, printed, and exported as often as you like. If you import a T.O.V.A. 7 test, no credits will be spent unless the T.O.V.A. 7 data file was itself never interpreted. You will always be warned and asked to confirm before a test credit is used.
Please note that importing an uncredited T.O.V.A. 7 test does not modify the original data file. Therefore, if you import the test again, on another computer, another test credit would be required. You can avoid this by exporting the test session from the T.O.V.A. 9 and importing that file on the other computer. T.O.V.A. 8 and 9 files are always credited.