Problem when importing photos with categories with a hierarchical structure

[OTRAG]

hi xnview team,

I have the following problem when importing RAW and JPG files into XnViewMP 1.8.8:

Starting point:
Files were rated, tagged and commented with a separate tool (F-Stoppapp for Android)
The information was stored by the tool both in the JPG file and in an XMP file (for RAW and JPG).

Problem:
The categories assigned by me are not processed as desired in XnViewMP

Case 1: The category is already known in XnViewMP and created hierarchically (Photography|Plants|Tree). The category was stored exactly in the tool and assigned to the RAW/JPG file. Although the corresponding settings were made in the XnViewMP setup (automatic parent category), only the category “Tree” is imported, but not the parent structure.

Case 2: The category is not known in XnViewMP. The category was created in the tool (Photography|Plants|Flower) and assigned to the RAW/JPG file. During import, a new category “Flower” is created in XnViewMP, but not under the existing structure Photography|Plants| but under a new structure Plants|. The topmost structure “Photography” was not taken into account.

When I look at the file info, I see the category I entered under xmp, dc, subject[1].

In the RAW/JPG files associated sidecar files (.xmp) my categories are entered as follows:
...
<dc:subject>
<rdf:Bag>
<rdf:li>Photographs|Plants|Tree
</rdf:Bag>
</dc:subject>
...

What do I have to do so that the categories assigned to the photos, including the default parent category, are correctly adopted by XnViewMP?

Regards, Otrag