You don't need to delete it, I did not under the same circumstances. I got my 25 point increase for completing 2 years work experience on March 1, when I actually completed 2 years on April 14. It seems confusing but that's how CIC assigns the points. If you get an ITA you should go ahead and apply since there is no mistake on your part, your info is all correct.
If you look in your under the score categories, you will see the points assigned to your work experience is now 50 instead of 25.
If you look in your under the score categories, you will see the points assigned to your work experience is now 50 instead of 25.