Based on the APO planned order sequence should be there in ECC but not happening

Hi APO experts,

In APO If create Planned order number  "00124" ( 01.08.2015) first and create this planned order number  " 00125" (02.08.2015) secound,   but when it moves these planned order from APO to ECC it is moving in Numerical sequence means in 00123  then 00124 which is reverse/not same in APO,But User concern is based on the APO planned order sequence it should be same in ECC(not in numerical sequence),Can you please suguest

As in this project they are not doing planned order conversion they are only moving planned orders (APO) --> planned orders (ECC)