DPS DK 4 set not simming properly

[gregarich]

Describe the bug
When swapping from a 245 or higher tier item to its 232 counterpart, the sim drops ~250 dps as if the 4 set bonus was not being activated.

To Reproduce
Steps to reproduce the behavior:

1. Go to DK DPS
2. Add the new 4 set bonus (245/258)
3. Sim
4. Swap any piece to the 232 counterpart
5. Sim
6. DPS drops in an unexpected manner

Expected behavior
The difference of 258>245>232 are 13 ilevel statwise between each level of the new tier. Following this logic, the difference of 245>258 is 50-60 dps per piece, so you would expect a loss of that much dps by swapping down. Instead the sim appears to perform as if the set bonus is not counted.

Sim Links and Screenshots

Link to full 245+ set

https://wowsims.github.io/wotlk/deathknight/#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

Link to gear set with 1 232 item

https://wowsims.github.io/wotlk/deathknight/#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