I just did our annual renewal and our existing license is 4.5.3 but I was sent one for 4.0.0. We're already old as it is and I don't want to have features revert.
The licenses we send are for the major version (4, 5, 6, etc.), but updating shouldn't effect any point upgrade you already have. For more information, please feel free to post a case within your company's support group.
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