Picklist values not included in CustomField exports anymore?

Try exporting --metadata CustomField:Account.AccountSource, and I noticed all the picklist values are empty.

<?xml version="1.0" encoding="UTF-8"?>
<CustomField xmlns="http://soap.sforce.com/2006/04/metadata">
    <fullName>AccountSource</fullName>
    <trackFeedHistory>true</trackFeedHistory>
    <trackHistory>false</trackHistory>
    <type>Picklist</type>
</CustomField>

It and all other picklist fields used to include their picklist values.  Is there a setting or a new metadata type I need to export to see these?  I do NOT want to move them manually.

This particular standard field has multiple picklist values.  Where'd they go?

Update

I'm starting to worry picklist values have moved to the PicklistValueInfo object.  Is there a new tool to use to migrate these to sandboxes?  Dataloader seems impractical and specific picklists for specific custom fields may be migrated before other values.

What is the new process supposed to be?  There's gotta be an article floating around somewhere...