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Those should remain fully functional until they expire. Uploading files using these vouchers will happen to the new production system.
What about the FileSender Python client?
After the FileSender server change completes please re-download the latest version of the FileSender "Python CLI client" from the new production FileSender web site ("My profile") to update the server name encoded into the client. Otherwise the client will fail to connect once filesender-test.aco.net no longer points to filesender.aco.net.
I still have other questions not answered here!
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