I have a survey question that is an external data type. This was setup using one external content type, and now I would like to change the external content type to a different one. However when I try to do this by editing the question, the external content type picker is disabled, as shown in the image. Why would sharepoint block me from changing this? I should have full permissions across everything, so I don’t think it could be a permissions issue. Is there an alternative way to change the external content type of this question? I am considering a work around of creating a new question, deleting the old question, and then renaming the new question to the old question, but I don’t know if that will ruin my existing data. Any help would be greatly appreciated.