I'm new to Proconnect and this is my first time filing an amended return. My client's return was filed incorrectly by a previous accountant. I followed the instructions but I'm getting an error:

Form 1040: Form 1040-X is included in this return. This return must be e-filed as an amended return. Please use E-file Amendment options in the File Return. US - Ref #55205

Any ideas on how to resolve this?