Styler step numbering

I am using Arbortext Tyler 5.4 M70. I am using S1000D 4.0.1 and I am trying to auto number procedural steps down to level 5. Levels one through three work as expected, however, level 4 repeats level five numbering unless I manually add a label, and level 5 steps revert back to level 1 numbering. Does anybody have any suggestions on this?

As you can see levels 1 through 3 work fine, levels 4 and five are hosed. I have tried every combination of things I can think of to no avail. Any suggestions?