Hi Jason,
As LEG is a sell for all SIROC settings, my main suspicion is that the sync between Beyond Charts' SPATM watch list for your portfolio and TradeMaster needs to be re-established.
To do this, in TradeMaster open the Portfolio Menu -> Open Trades - Current and click 'Create Watch List' in the bottom left. This will override and re-establish the sync for the existing portfolio watch list in Beyond Charts.
Try the Portfolio scan again and see if it re-appears.
In case you're still having no luck, open the Scans panel on the right hand side of Beyond Charts (right click a chart background -> side panels -> Scans). Make sure the tack in the top right corner is facing down.
Under the Profiles tab, highlight the Portfolio scan name so it's in focus and click in to the Securities tab at the top. You want to ensure your current Portfolio watch list is present under the Watch List box and not an older name or a different portfolio perhaps. You can drag across your SPA3 for ASX portfolio watch list from the left hand wide Watch List Explorer if needed.