Switched to Active Army after ETS. I need some help?

whats your current rank? Specialist? If you are on currently active duty status, I am sure you will have to appear before a board for promotion to E-5 (SGT)...having said that, they could also fast track you and send you to BLC (I believe that is PLDC for us old schoolers?)
Keep in mind, all your prior service time is great, especially when it comes time to retire, if you choose to do so....but this is a different component. Active duty is different than reserve time and Guard time....so I would prepare myself for a board and a fast track to school so they can pin your SGT's rank....your first line supervisor should be able to direct this for you...good luck...hooah!

The answer is in the regulation. Just open the promotion reg and look at Mandatory Integrated List timeline

Don't know what your MOS is but assume you are moving into an NCO slot. You should be able to be a leader at this point. That includes solving these issues for your troops; this is good training. It's all about how you stack up points-wise. As SSG Ayscue said, do the research into your records to be sure everything transferred in properly. My experience in my Active Duty Army days, was ripe with really bad record keeping and follow up by individuals that just didn't care. Get it corrected if you find errors while docs and personnel are still around. Don't sweat a board either. Remember, you should already know and be able to perform all the responsibilities and requirements for the rank prior to receiving it. Good luck!