How do Picklist Extension (PLE) Filters interact with other inclusion and exclusion rules?<!-- /*NS Branding Styles*/ --> .ns-kb-css-body-editor-container { p { font-size: 12pt; font-family: Lato; color: #000000; } span { font-size: 12pt; font-family: Lato; color: #000000; } h2 { font-size: 24pt; font-family: Lato; color: black; } h3 { font-size: 18pt; font-family: Lato; color: black; } h4 { font-size: 14pt; font-family: Lato; color: black; } a { font-size: 12pt; font-family: Lato; color: #00718F; } a:hover { font-size: 12pt; color: #024F69; } a:target { font-size: 12pt; color: #032D42; } a:visited { font-size: 12pt; color: #7057C7; } ul { font-size: 12pt; font-family: Lato; } li { font-size: 12pt; font-family: Lato; } img { display: block; max-width: ; width: auto; height: auto; } } Picklist Extension filters act in the same way that normal simple inclusion rules work except that when the defined filter fields are empty, no options are included instead of all options when a simple inclusion rule is not firing. If you wanted to have a Field that is not defined as a filter on the PLE and also limit options in your PLE Field, you would need to use a simple Exclusion Rule to further limit those Field Options, as using an Inclusion Rule would combine with the inherent inclusion contained within the PLE filter and leave all Field Options available.