After change Y axis, some series labels dissapear

Hello guys,

I downloaded this template from MS website.

This is what I'm doing:

1. I copy/paste my info into the template table
2. then copy that sheet and paste it on the same workbook to keep the formating
3. However, my numbers/info are lower on the second sheet/chart, so I need to fix the Y axis to make it look better
4. After doing so, some series labels dissapear

Please advise

Thanks!