I had a similar issue , I created a flow with trigger "Cognitoforms - When a new entry is created"
but I also wanted to use the same flow for the trigger "Cognitoforms - When a new entry is updated"
So I created a copy of my first flow deleted the trigger action and changed it to the trigger "Cognitoforms - When a new entry is updated" and saved this copy.
Opened this copy and used export > Package (.zip) to export it to my computer as a zip with json files.
Then I created another copy of my first flow also exported this as a Package (.zip) with json files.
Then I unzipped both of the zip files and opened the following file with notepad++ (or another editor) : Microsoft.Flow\flows\123456-a54e-46azr2-969a-be0470611ae4\definition.json file
Then I copied everything between the brackets of "triggers":{ ...... } from the definition.json file of the new trigger ("Cognitoforms - When a new entry is updated" ) to "triggers":{......} in the other file zipped the files again of the folder with the replaced triggers content and imported that zip back into flows .