Why do only some of my forms have the Lock/Unlock Data Table when formatting auto-emails?

Just as the title says.  One of my forms have the Lock/Unlock button when customizing the email to be send to me when the form is filled out or as an autoresponder email to the person who filled out the form.  When it's locked all my changes aren't save.  Yet, all my other forms do not have this button and I'm able to customize and save how the email table looks.

When you press the UNLOCK DATA TABLE, it will enable you to add/modify fields in the default table. It will also display all the fields, whether it is left blank or not.

Please note, by default all the fields that are left blank in the form, will be hidden in the email and not be displayed.

When it is LOCKED,  you will not be able to modify or add fields in the table. It is set by default and all the fields that are left blank in the form, will not be displayed in the email.

Please let us know if you require additional information.

You clearly can't read Victor.  I know what the button does.  I'm asking why it only appears on one of my forms while the others don't have the button.

Sorry for the confusion. The reason some of your email notification have the LOCK/UNLOCK button is because in the preference setting you have enabled the HIDE EMPTY FIELDS ON EMAILS

The ones that do not have this button, have this feature disabled.

Thank you, that was it!