Does anyone know of any sources for information on the 1st Texas Sharpshooters after they crossed back the Mississippi and returned to the Trans-Mississippi?

I recently located a obituary for my great great grandfather (Jacob Baldwin) that stated his Confederate service was in Captain C. Z. Bridges company. Ron Brothers website on the First Texas shows C.Z. Bridge was Captain of Co. B of the 1st Texas, it does not list Jacob Baldwin. The only listing for Jacob Baldwin from the Texas archives is enlistment 7/6/61 in Fannin County in TST. Bridge lived south of Windom, Texas and Baldwin lived NW of Windom in Fannin County so I believe the obituary is correct. The only item I have found is on fold3 where Jacob Baldwin was paid $30 for providing a wagon and team to provide transportation for supplies from Lamar County to Bonham on 3/22/63. The 1st Texas was in Louisiana on this date on the way to Port Hudson. If a soldier is on detached duty are they included on a unit roster?

One more question, if a person was receiving a Mexican War pension would they have been ineligible to receive a Confederate pension? Jacob Baldwin did not receive a Confederate pension, but did receive a Mexican War pension as served in the Texas Mounted Volunteers under Walter P. Lane. His pension declaration states he was disabled in 1870 from a gunshot and was not incurred in the late rebellion against the U.S.