In the DTE (Directorate of Technical Education) Polytechnic CAP (Centralized Admission Process) rounds, if you select the "Betterment" option during a particular round, it means that you are opting to wait for a better allotment in the subsequent rounds. This choice keeps your current seat allotted in the previous round on hold while allowing you to compete for a potentially better option in the next round.

However, if you opt for "Betterment" in an earlier round (like the 1st or 2nd round), this betterment option generally remains active until the final round (like the 3rd round) of the CAP process. If a better option is allotted to you in the next round, your previous seat will be automatically canceled, and you'll be allotted the new seat. If no better option is available, you will retain your current seat.

In the 3rd round, which is often the final one, your choice of betterment will either lead to a new seat if available, or you will continue with your current allotment. It's essential to carefully consider your choices in the final round, as this will determine your final allotment for admission.