Complex Variant Primitives and Left Align

Once a variant is in allelic primitive form, left-shifting may move one of the split records into a new position. In this case, a common 1bp deletion at the beginning of a homopolomer appeared to not be missing in GS00330, but once the MNP AA/G is split into a 1bp deletion and an A/G SNP, the deletion gets left-aligned to its common form.

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