Tour guides, whether transferred across provinces or within the province, must go through the formalities! The municipal tourism bureau will do. Handle forwarding letters.
But you are a qualification certificate, which means you haven't changed to an IC card, so you don't have to go through the formalities from Hubei to Henan. However, it needs to be retaken, and the scope of use of the qualification certificate is limited.
However, it is also a good idea to suggest that you take an English test in Henan, so as to avoid re-taking the written Chinese test.
It is difficult to apply for a tour guide IC card in Henan with Hubei qualification certificate only, unless you have acquaintances in the tourism bureau.
I wish it success!