I thought this question was pretty interesting so I posed the question to the Texas Parks and Wildlife and this was thier response:

To answer your question I must give an example: Texas is in the central flyway, using 5 ducks as an example, that would be the daily bag limit for Texas. You drive to Arkansas and hunt the afternoon. Arkansas is in a different fly zone, and 7 ducks are allowed. You then, on the same day may hunt and possess 5 Texas ducks, and hunt and possess and additional 2 Arkansas ducks to give you the ALLOWED AGGREGATE DAILY BAG LIMIT OF 7 ducks as allowed by the Federal government. You should not have 5 ducks from Texas and 7 Ducks from Arkansas as this would exceed the aggregate daily bag limit as allowed by USFW. I hope this answers your question. Feel free to call or email anytime.

G.R.Gonzalez

Ass't Chief - Marine Enforcement

4200 Smith School Road

Austin, Texas 78744

512-389-4627