is it good to stick to old role in h1b cap exempt or it does not matter

Hi My approved h1 petition was on computer programmer role. When my extension filed they changed it to web developer role which got rejected ( client did not provided end client letter). I returned back to india and refiling under cap exempt from other client.
Now should i stick to computer programmer role or I should go for Web developer role. Thinking lot of rejection and high documentation / queries what role is good to go with.