Hello Aspirant,

Don't worry dear because there is no need to change the earlier certificate because it will be considered as valid till the admission process but for document verification you have to produce a renewed certificate because at the time of document verification expired category certificate won't be considered valid so make sure to renew it before the document verification process.

And as you have mentioned that you will get your renewed certificate by July 13th so you can easily use it after that and obviously admissions will not be started before August month.

I hope this information helps you.

Good Luck!!