I use a spreadsheet to extract data from an access database. When the data is extracted it has about 10k line items and one of the columns displays the date. I formatted the cell to simply display the month (Jan, Feb, Mar, etc). When I create a PivotTable with the 10K line items each line displays the month. When I use the date as a filter it displays every single lines month in the filter box. Is there any way I can combine the months in the filter box so that each month would only display once collectively instead of for each line item?

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Thanks for your assistance