I have doute about josaa counselling (float) for example if got ece in x institute in first round we will keep float in second round we
Once you get a seat in a furthur round of JOSAA say in third round, then the seats which you had obtained in first and second rounds are lost and you cannot claim those seats.
Also since they were below in preference, you will not get them again till seven rounds.
If you do not get a satisfactory seat till 7th round then go to special round and please fill only those seats in which you are really interested.