12.1.3 - Asset Route WIP Accounting Class, Accounting Entries

Facts:
WIP accounting class of Asset Route is different from the included assets.
As per Oracle functionality, the maintenance cost (Material,Labor,Equipment) will be split to included assets
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Consider below example.
Asset Route = GREASING (WIP Accounting Class = 1000)
Asset Numbers =
ELEVATOR1  (WIP Accounting Class = 1001)
FORKLIFT1 (WIP Accounting Class = 1002)
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Problem definition:
1. The accounting entries would use Asset route WIP accounting class (1000) as the workorder is created for GREASING.
2. The Asset Numbers (ELEVATOR1) will not have reference to the Asset route workorder

Is there any established workaround to address the above issues?

Thanks,
Prakash