TYPO3 won't use translation files with segmentation informations and they look like: <trans-unit id="example"> <source>Beispiel</source> <seg-source> <mrk mtype="seg" mid="108">Beispiel</mrk> </seg-source>

Remove segmentation information from translation

TYPO3 won't use translation files they look like:
<trans-unit id="example">
        <source>Beispiel</source>
         <seg-source>
               <mrk mtype="seg" mid="108">Beispiel</mrk>
         </seg-source>
         <target state="final">
               <mrk mtype="seg" mid="108">Example</mrk>
         </target>
</trans-unit>

So you can replace this with a regex and the "Search and Replace"-function von PhpStorm.

Remove "<mrk mtype="seg" mid="108">":
^(.*)(\<mrk mtype=\"seg\" mid=\"[^"]*\"\>)(.*?)

Remove "<seg-source>Beispiel</seg-source>":
^(.*)(<seg-source>[^*]*?<\/seg-source>)(.*?)