Should I update the Channel Prefix or Hosting Page fields on my existing Campaign and Forms
Updating the Channel Prefix and Hosting Page fields is generally not recommended unless there is an extreme need to make that update. The Channel Prefix and Hosting Page fields are the communication link between Fundraising Online and deployed forms and widgets. If the Channel Prefix and Hosting Page field values are changed then the deployed forms widget snippets will not be able to communicate back to Fundraising Online resulting in a webpage error.
If you update the Channel Prefix and Hosting Page fields in Fundraising Online you need need to update your deployed pages.