This is dependant on a certain setting: Use taxable account to fund IRA and 529 saving when current year cash flow is inadequate. This setting can be found in the Gear Icon > Settings > Methodology tab of each client plan:
If this setting is unchecked, 529 savings will not occur in years where clients do not have sufficient cash inflows. Checking this setting will cause 529 savings to be funded by liquidating taxable assets in those instances.
