Can I Use an Older Version of My Software with a New Vector License?
Can I use an older version of my software with a New Vector License?
Yes, that may be possible. For details see EULA or Enterprise License Terms and Conditions that are valid for your purchase.
An example you find in the End User License Agreement for Vector Standard Software Products for Germany, Version 1.1 of 2018-03-14, in Paragraph 5.5.
Technically, versions older than the current one can be used with a New Vector License if the older version supports the New Vector License Model. For that see the Software Compatibilty List.