The easiest way to move the seismic load is to open up the editor ( Edit > Edit Input Command File ) and move the two seismic load cases 7 and 8 ahead of the load case 1.
You have applied member release MX. Releases are applied with respect to the member local axis. So a release MX essentially means that the member is allowed to rotate about it’s own axis which is not that common. If you want moment releases about major and minor axes, you should release MY and MZ instead as shown next
MEMBER RELEASE
420 421 423 426 429 430 435 TO 438 447 TO 450 459 TO 461 469 470 475 TO 477 -
478 START MY MZ
However if you release the moments at the bases of the columns at the top floor, your structure is going to be unstable against lateral loads resulting in huge displacements. So you should either consider the bases as fixed or should consider adding braces to increase the lateral stiffness. For now I have commented out the releases. Even with the column bases fixed, the displacements in your model are quite high and you should definitely check on that and make changes to your structure, specially the top portion.
Also as Andrej has pointed out, you have a block of member load command that is not within any load case. You may want to move that under the appropriate load case. For now I have commented the block out.
A modified file is attached for reference.
(Please visit the site to view this file)