Itr-2 submitted but not verified: how to submit again?

Dear Experts,

I have following questions -

1. I submitted a ITR-2 and have not yet e-verified. But I have to make some corrections. Can I just submit another ITR-2 (upload the X M L) as "original return before due date"? or do I need verify this one, and then submit and verify another ITR-2 as "revised return"?

2. Under Schedule EI - Interest, do I need to include PPF interest even if I have not withdrawn? Or can I just include interest from tax free bonds if I have not withdrawn PPF? 

Thank you in advance.

regards.

SDas