During josaa counselling which marksheet of class 12 could be uploaded whether improvement marksheet or CBSE Board original result
Best ofboth scores from marksheets will be considered for Josaa Counselling.
Students are advised to carry both marksheets for document verification and have enough photocopies.
Incase you have any doubts feel free to ask.
https://engineering.careers360.com/articles/josaa
During your counselling,you can produce your improvement marksheet if it is out previously.
Make sure that during the time of counselling,you have to produce both the original form and the xerox form of the same.
Hope this helps.