You can try 2 things:
NOT auto Explode the note.
What you will have is just 1 balloon for the note and all the information in one cell.
You can export your project to an *.ixprj and then change the balloon number from 1.1,1.2, ... to 1,2,3 for the note using the Grouping options.
that should take just a minute or two and you will have exactly what you want.
FYI: You can see this in the Quick Start Guide
I have created a macro in the spreadsheet that I execute with a keyboard combinations in order to change the value 1.1 for 1.
Thanks for your reply,