This is royally kicking my ****. I have the same problem but not only don't I see a "CDMA Subscriptions" option I don't even see a setting to change NV settings. This is a L710T (Boost S3) running 5.0.2, so in settings all I see under Cellular networks is Data Roaming (either on or off), Preferred Network Type (right now is set to LTE Recommended), System Select (which no matter what defaults to home only after every airplane mode toggle) and Access Point Names (which won't let me edit and only says Access Point Settings are not available for this user)
Any help would be appreciated!!!