Can i attend h1b visa interview on 2nd petition while 1st petition is given 221(g)

[leelasai123]

I have two approved h1b petitons

I have attended for H1B interview and I was issued 221g on first petition. I have another H1B approved petition from different employer. Since the first petition is under administrative processing for long time , Can I attend the H1B interview for second petition ?

IF i go for interview for second petition will it going to effect first petition processing?.
Are they going to drop the first petition?