It seems like I have two types of Lucid Cards on my Board. One Type with a drop down for the owner coming from a company directory and the other one with a free text field. This is not what I intended and I would like to have on or the other. But I cannot convert the free text ones into drop down or the other way around. I can also no longer create free text cards. I am managing a large Backlog so

help is appreciated with a bulk solution.