Uploading new app version after expiration of provisioning profile

I visited many threads over Stack Overflow about Provisioning Profile before posting this question, but didn't get any satisfied opinion.

My Problem is that I have one of my clients app version 1.0 live but its Provisioning Profile is expired few months back.

enter image description here

Now I want to upload the new version 2.0 but I don't have existing p12, I only have is Credentials for developer account.

Following are my Queries:

1) Should I DELETE the existing expired certificates.

2) If I delete these existing certificates will it affect the existing customers those who are using this app.

3) As I mentioned earlier that I DON'T HAVE ANY EXISTING P12 not any other certificate, SO CAN I CREATE ALL THE WAY NEW CSR and P12.

4) After uploading NEW VERSION 2.0 with newly created certificates will the existing customers get an update after app gets live.

Regards.

Solution

Yes, create new certificates. Existing users will not be affected (you need to create new certificates every year). They will get updates to your new version (assuming you don't change the bundle identifier - i.e. you release a version upgrade for the same app).