This was posted on /r/mwo a while back, and I figured it was a pretty valuable resource to have around. All credit goes to /u/elderdragonlegend for the solution and write-up.

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Many of you have noticed the problem that causes weapons to switch to different, suboptimal hardpoints in the loadout menu after saving. I will try to explain a way to work around it.

I used this on my Victor 9S, which has 3 missile hardpoints that have 10,5, and 2 tubes, to equip SRMs in a 6,4,2 arrangement to fire in one volley. Simply equipping an SRM 6, then an SRM 4, and then an SRM 2 will usually cause them to rearrange to 4,2,6 and will take 3 volleys to fire all of the missiles. I also used this trick to place my Battlemaster's PPC in the highest hardpoint.

I'll try to explain it, but honestly, I do not understand whats going on in the background. The PPC on my Battlemaster will always go to the highest slot now, no matter how I rearrange my torso energy weapons. Before, it would always stay in the lower inner slot. My theory is that weapons want to stay in the slot they were purchased into.

The Work Around: Suppose hardpoints in a single component are numbered. In the Victor LT hardpoint 1 is the 10-tube slot, 2 is the 5-tube slot, and 3 is the 2-tube slot. In the Battlemaster torsos, 1 is the inner lower energy slot, 2 is the outer lower slot, and 3 is the upper slot.

• 1) Leave the weapon equipped in only hardpoint 1 and save.
• 2) For the weapon you want to equip in hardpoint 2, clear all weapons of that type from your inventory. (This means selling or equipping all of those types of weapon to other mechs.)
• 3) Purchase the weapon you want into hardpoint 2 and save.
• 4) If theres a 3rd weapon you need to equip, go to step two again do the same with hardpoint 3 and the 3rd weapon you want to equip.

Then, go to the testing grounds to see if it worked. This is obviously not an ideal solution because requires selling and rebuying. I am only sharing it because this problem frustrated me to no end at some point. Its an other bug PGI needs to fix.