Is there a way to insert my own comments to a form i disable?

i would like to disable a report but only because the information has moved to another, more update, form. 

If I understood you correctly you want to change the message "This form is currently unavailable!" on your disabled form. 

You can change it inside of form Preferences.

Inside of this guide you can find how to change form warnings:

https://www.jotform.com/help/61-How-to-Change-Form-Warnings 

Hope this will help. Let us know if you need further assistance. 

You all are awesome! Thank you!!

You're welcome.

Feel free to contact us if you have any other questions.