UBB.threads PHP Forum Software Community Forums UBB.threads 7 Bug Reports Fixed Bugs [Fixed 7.3][7.2.2] Merged posts don't have their correct spot in the topiclist

My situation

Topic 1
Topic 2
Topic 3
Topic 4
Topic 5
Topic 7
Topic 8
Topic 9

Merge topic 2 into topic 8... result:

Topic 1
Topic 3
Topic 4
Topic 5
Topic 7
Topic 8
Topic 9

Topic 8 should be on the spot where topic 2 used to be.