unable to unset tag set externaly

[frederic chaume]

Hi all

after the crash I had this week, I  have rebuild all my configuration , 
but I have a remaining problem with the tag

see the scenario below (done on a raw file and it was working well 
before the crash)
- Set the tag in DXO => refresh the caption in DK, tag is seen correctly 
in DK
- unset the tag in DXO => refresh the caption in DK but tag still 
visible in DK even if the tag is no more in the XMP sidecar file

I tried multiple times and no change
I have removed the XMP and tried again, same problem still happened

in setting/metadata/advanced/tag the order I used is
lr.hierarchicaltag
dc.subject
Digikam.TagList
...

the flag "unify read and write " is set

Any idea? thanks for your help

regards
Frederic