Good day Tumi,
I would like to elaborate further on what tbyrne777 has mentioned .
Please make sure that you read through these two following KB articles to familiarize yourself with any known issues or changes to the product that could afftect your current processes afte the upgrade.
If you are also using programs such as silver light web browser, K2 for visual studio and K2 studio please take note that you will need to upgrade your servers from 4.7 to K2 5.1 so that you may have access to legacy designers.
To enable you to edit and maintain your 4.7 workflows after you upgrade to K2 five.
Should you find this information useful please mark as "Kudo and/or Accepted Solution"
K2 will not accept any liability for any issues arising from actions taken in respect of the information provided by any forum member.
Yes your workflow will continue to work and when you upgrade also check prerequisite for k2 4.7 and k2 5.2 because they are different, sometime when we upgrade from k2 4.7 to k2 5.2 the error appear asking you to upgrade from k2 5.0 first and you upgrade to k2 5.2 .
Should you find the information from the article useful or leading you to the answer please mark as "Solution and/or Kudo", as it will assist other k2 developers with relevant information in the near future.
[K2 will not accept any liability for any issues arising from actions taken in respect of the information provided by any forum member]