H1B Visa verification

my application got picked up in FY-2017 lottery. Am having genuine 4+ years of experience in two
reputed companies (2+ from previous employer worked on JAVA and 2+ with current employer). But I changed my technology (removed technical department from exp. letter) when joining my current employer and same documents are processed for H1B application with different consultancy. Now, am afraid of my situation. I never though of past exp documents as it was last minute decision. Will it create any problem during visa process.

removed technical department from exp. letter Means? Does start /end dates matches in exp letter?

Per my understanding, prev exp letters does not matter. -> This is my opinion and not legal opinion.

Yes, start date and end date are same.
Can I submit actual experience letter now?

Always genuine documents are better… that gives confidence while in the consulate.