Not grouping according to CustomImportOrder

I'm experiencing issues with getting CustomImportOrder working properly. I have theese imports

import se.pkg1.pkgA.pkgX.SomeClass1 // #1
import se.pkg1.pkgA.pkgX.SomeClass2 // #2
 
import se.pkg1.pkgB.pkgNotX.SomeClassX // #3

 
My CustomImportOrder definition looks like this:

<module name="CustomImportOrder">
            <property name="severity" value="error"/>
            <property name="customImportOrderRules"                      value="STANDARD_JAVA_PACKAGE###THIRD_PARTY_PACKAGE###SPECIAL_IMPORTS###SAME_PACKAGE(3)###STATIC"/>
            <property name="standardPackageRegExp" value="java|javax|jakarta"/>
            <property name="thirdPartyPackageRegExp" value="se.pkg1.pkgA"/>
            <property name="specialImportsRegExp" value="se.pkg1"/>
            <property name="sortImportsInGroupAlphabetically" value="true"/>
            <property name="separateLineBetweenGroups" value="true"/>
        </module> 

My interpretation and also how the IntelliJ Checkstyle plugin order the imports is that packages in se.pkg1.pkgA falls within THIRD_PARTY_PACKAGE and so #1 and #2 above is grouped together. 
 
#3 on the other hand falls within SPECIAL_IMPORTS and should be grouped separate, below THIRD_PARTY_PACKAGE. The problem is though that if I import checkstyle config in IntelliJ java imports it seem to work as expected but when I run the 
maven-checkstyle-plugin it think all three imports should belong to the same group as this:

import se.pkg1.pkgB.pkgNotX.SomeClassX // #3
import se.pkg1.pkgA.pkgX.SomeClass1 // #1
import se.pkg1.pkgA.pkgX.SomeClass2 // #2

Shouldn't the plugin order the imports like in my first listing (#1,2, 3) in the post?