We have a farm that has Nintex workflows enterprise version and we are planning to set up Nintex standard in another farm. My question is can I migrate workflows that were designed in the enterprise edition to Standard edition. I will make sure only the actions supported by the standard edition are being moved (as there are some differences in some features between enterprise and standard).
Why migrate from enterprise to standard... that doesn't seem like a great approach and more work if you think about reducing functionality. Are you doing that because of pricing?
From a feature perspective, yes there are some features not available in standard, but overall you should be okay. I would try executing a test migration with some of the workflows to just test it first. It should automatically disable the features if the platform is not licensed for those.
Of course if I could recommend, don't go backwards :-). Let us know how it goes.