I have not heard anyone whose TPS is approved who has EAD already approved. Please share if anyone has same issue. If your TPS is not approved in 90 days, you can create a service request. I doubt if you get EAD if you already have one unless you surrender that previous EAD and request for EAD through TPS. Your EAD is based on the legal immegration status, if 140 is pending or 485 is pending. You are not suppose to use EAD if your status is invalid. So, even if your EAD is valid until June 2016, and do not maintain status like I said (approved or pending case of 140/485), you are not suppose use that EAD. Hope you understand.