That was quick.......consol GXYDA, page-63

3.3 Last day for trading in the pre-re-organised +securities Friday May 19, 2017
Notification of Consolidation/Split
Notification of Consolidation/Split 3 / 5
3.4 *Effective date. Trading in the re-organised securities commences on a +deferred settlement basis. If the +entity's securities are suspended from trading during this period there will be no +deferred settlement trading however ASX still captures this date. Monday May 22, 2017
3.5 Record date Tuesday May 23, 2017
3.6 First day for +entity to send notices to +security holders of the change in the number of +securities they hold. First day for +entity to register +securities on a post-reorganised basis Wednesday May 24, 2017

My take on this is that Friday was last day to trade with those trades at T+2 Settling Tuesday 23...which is The Record Date.
The share registry will be updated on that day and registered holders will be notified on Wednesday 24 as to how many of the new shares they are holding.

Not expecting to see that update in Westpac Portfolio until Wednesday. If you are concerned give your Broker a call...

Just my version based on the ASX announcement above.