Save as CRAM precondition incorrectly fails on sorted Parquet input

[heuermh]

$ adam-submit transformAlignments \
  -sort_by_reference_position_and_index \
  NA12878.alignedHg38.duplicateMarked.baseRealigned.bam \
  NA12878.alignedHg38.duplicateMarked.baseRealigned.alignments.adam

$ INPUT=NA12878.alignedHg38.duplicateMarked.baseRealigned.alignments.adam \
  OUTPUT=NA12878.alignedHg38.duplicateMarked.baseRealigned.out.cram \
  adam-shell -i convert_parquet_alignments_adam_dataset.scala
...
java.lang.IllegalArgumentException: requirement failed: To save as CRAM, input must be sorted.
  at scala.Predef$.require(Predef.scala:224)
  at org.bdgenomics.adam.rdd.read.AlignmentRecordDataset$$anonfun$saveAsSam$2.apply(AlignmentRecordDataset.scala:896)
  at scala.Option.fold(Option.scala:158)
  at org.apache.spark.rdd.Timer.time(Timer.scala:48)
  at org.bdgenomics.adam.rdd.read.AlignmentRecordDataset.saveAsSam(AlignmentRecordDataset.scala:832)
  at org.bdgenomics.adam.rdd.read.AlignmentRecordDataset$$anonfun$saveAsSam$1.apply$mcV$sp(AlignmentRecordDataset.scala:823)
  at org.bdgenomics.adam.rdd.read.AlignmentRecordDataset$$anonfun$saveAsSam$1.apply(AlignmentRecordDataset.scala:823)
  at org.bdgenomics.adam.rdd.read.AlignmentRecordDataset$$anonfun$saveAsSam$1.apply(AlignmentRecordDataset.scala:823)
  at scala.Option.fold(Option.scala:158)
  at org.apache.spark.rdd.Timer.time(Timer.scala:48)
  at org.bdgenomics.adam.rdd.read.AlignmentRecordDataset.saveAsSam(AlignmentRecordDataset.scala:822)
  ... 65 elided

See convert_parquet_alignments_adam_dataset.scala