I have a layer that I have successfully edited in the past that is now acting up. If I click on a point to edit the attributes or go to the table to edit them there, any value I put into any field will automatically revert to what it used to be half a second after I tab or enter out of the field. I have played with the settings to make sure that editing is allowed, but it hasn't changed the behavior of the layer. Any ideas on what is causing this to happen?