Delete data in selected cells of a filtered range

HI folks,

I have a protected spreadsheet which has every second row editable.
At the end of the year I want to be able to delete all of the information from the editable rows of the sheet.
When I filter on the editable rows, select all and press delete, I get the error telling me the sheet is protected.
I am selecting by highlighting the first cell then control and click to the last cell.
I assume this is because when I select the filtered cells the delete is looking through the filter and also attempting to delete the information in the protected cells.

Is there any way to achieve this manually? It is too risky to provide a button linked to VBA. Someone will accidentally delete information half way through the year.

Thanks.