Once you are done with selecting your filters you can change the sort order for them. You may want to change sequence of the filter as they will actually appear in your project depending on your preferences. To change the sequence order of filters access the sort order sub-tab under filters tab (as on screenshot below) and simply tick the box next to filter and use arrow to move it up or down for a single place or at the top or bottom with double / triple arrows depending on how many places you need to move them for.
The filter sorting of answers, within an Optional filter is by default defined based on the sort order in the answer block. However it can also be alphabetically when needed. Sorting the filter options alphabetically is great in trackers when new filter options continuously are added, by sorting these options alphabetically you always get a relevant sort order without any manual job when the new filter options are added.