Missing nodes (time-series) in hierarchy: combinef reconciliation function error

[som028]

I am trying to reconcile a set of time series forecast that are already in hierarchal format using combinef.
Issue is there are some missing node (time series) for example A -> AA AB, B -> BA BB, AA-> AAA AAB, BB -> BBA BBB.
As you notice in this example there is not series for AB. In this situation the combinef function is erroring out.
Not sure it should be a new issue or this is an existing issue.
Error in utmat %*% fcasts: Cholmod error 'X and/or Y have wrong dimensions' at file ../MatrixOps/cholmod_sdmult.c, line 90
Traceback:

1. combinef(fcasts, nodes, weights = NULL, algorithms = "cg",
   . keep = "gts")
2. CG(fcasts = fcasts, S = smat, weights = weights)
3. as.matrix(utmat %*% fcasts)
4. utmat %*% fcasts
5. utmat %*% fcasts

[robjhyndman]

Please provide a reproducible example of the problem.

[som028]

I was able to find a way around the issue by creating dummy duplicate nodes from the parent node for those without any child nodes. Closing the issue. Thanks for quick reply!