I would love to see a DPX file within the ACES test file corpus containing ADX encoding with the constrained field values described in SMPTE ST 268:2014. I ask because several archives currently employ a two-step workflow in which a raw DPX file is created via film scanning, followed by an additional "restored DPX" for mastering (See: http://www.digitizationguidelines.gov/guidelines/FADGI_FilmScan_PWS-SOW_20150908.pdf).