Steps to replicate the issue (include links if applicable):

• An editor participate to an ISA campaign
• He changes the rank of a claim from Normal to Preferred

What happens?:

• The claim had a qualifier (eg, color: green)
• on Commons, the rank is changed from Normal to Preferred (ok) and the color property is removed. ---> Information loss
• editors revert the edit from ISA. If done repeatedly, the ISA editor is considered a vandal

What should have happened instead?:

• on ISA, qualifiers are not proposed. Either they should be added to the tool, or the change of rank of a claim should not be removing a claim qualifier

Also noted with qualifier Background

Examples :

• https://commons.wikimedia.org/w/index.php?title=File:Crique_de_l%27Anau,_Sète,_Hérault_01.jpg&type=revision&diff=683493430&oldid=622081503&diffmode=source
• https://commons.wikimedia.org/w/index.php?title=File:Building_of_the_Salins_de_Frontignan_01.jpg&action=history
• https://commons.wikimedia.org/w/index.php?title=File:Black-headed_weaver_(Ploceus_cucullatus_bohndorffi)_male_nest_building.jpg&type=revision&diff=683495599&oldid=675021045&diffmode=source