Chart resets formatting when rows are hidden

[HVCompleto]

Hello,

I have a chart that i use often for reporting purposes, and therefor it is important for the formatting to stay consistent.
Additionally, the chart and the data itself are on a sheet where I have a button to hide and unhide the rows, for ease of use, due to the size of the sheet

Whenever I hide or unhide the chart, the formatting stays the same. However, when I close the file and open it back again, the formatting is reset.

Is there any way to prevent this?

Thank you