I asked a question recently, How can I create an Image in GDI+ from a Base64-Encoded string in C++?, which got a response that led me to the answer. I accepted the leading response and posted the code I came up with as the answer.
Now I need to go the opposite direction (I have a GDI+ Image and I need to get its contents into a Base64 string) and due to the nature of the process, it's not a straightforward reversal of steps, so I'd like to ask SO for more help.
Should I update the original question to include an "and vice versa"? Or should I create a new question? And if I revise the original question, what should I do about the answer I already accepted?