Hello Andrea,
I have reverted my changeset (including of course all other fix included with it).
you're quite right that I should have discussed it on the import page but the link to it was missing on the initial changeset and even the wiki page you link me to has no link to the import documentation as recommended nor a link to the import mailing (so maybe the first issue is the import doesn't follow the import rule). I don't understand the need for an unknown value, the absence of a key also indicates that the information is not available. and this prevents each use of the data to have to make a value list meaning that there is no value like unknown not-available Idon'tremember maybe Ineedtocheckit...).
Besides, I don't understand what you mean by "you state that your account is focused on "no-survey changeset<...> this is clearly not the case.". I didn't make a survey for this changeet, otherwise I could have completed all the unknown information.
Regards,
Marc

Hello,
about node/5747851080
it's a emergency=fire_hydrant emergency=fire_hydrant
or a amenity=water_point amenity=water_point ?
Regards,
Marc

Hello,
about node/6088710533
it's an emergency fire hydrant ?
emergency=fire_hydrant
Regards,
Marc

Hello,
about node/6043915456
node/6043920594
it's an emergency fire hydrant ?
emergency=fire_hydrant
Regards,
Marc

Ho sorry, I forget to post the link
way/552160585
way/552160584
way/552160583
I can fix it, but but I don't know what overtalking means

Bonjour,
modif effectuée changeset/69135215
ce n'est pas parfait mais ce serra plus facile à comprendre/trouver/utiliser qu'un tag en valeur du tag description
Cordialement,
Marc

Helllo,
about way/469887895
it's a substation or a generator ?
Regards,
Marc

Hello,
what's the meaning of overtalking in generator:type=solar_photovoltaic_panelovertalking ?
Regards,
Marc

Hello,
what's the meaning of 331 in generator:type=solar_photovoltaic_panel331 ?
Regards,
Marc

Hello,
what's the meaning of 331 in generator:type=solar_photovoltaic_panel331 ?
Regards,
Marc

Hello,
what's the meaning of 331 in generator:type=solar_photovoltaic_panel331 ?
Regards,
Marc

Hello,
about node/2808353097
node/2808353096
a propal is ongoing to harmonize the tag.
the favorite tags are amenity=mounting_block and man_made=mounting_block
Regards,
Marc

Hello,
about way/262306157
a propal is ongoing to harmonize the tag.
Some mapper use man_made=mounting_block
Regards,
Marc

also node/360435266
node/360435268

Hello,
about node/404738792
a propal is ongoing to harmonize the tag.
the favorite tags are amenity=mounting_block and man_made=mounting_block
Regards,
Marc

Hello,
node/4209882008
it's a emergency=fire_hydrant emergency=fire_hydrant
or a amenity=water_point amenity=water_point ?
Regards,
Marc

Hello Tom,
way/237905777
what's the meaning of PDF_layer ?
Regards,
Marc

Hello,

a long time ago, you create 6 strange or duplicate objects with pdf-imported tag like way/104372705
Can you check it ?

Regards,
Marc

Hello,
you make a pdf with your own tracking data and import it in osm ?
Regards,
Marc

maybe :) only you know how it happened :-)
there are still 37 left in Switzerland, I looked at several of them, it was each time one of your additions :-)
can you clean all of them please ?
https://osm.li/YZB (you can export into josm)
Regards,
Marc