I am not 100% sure, but the ASX seems to be saying that trading...

I am not 100% sure, but the ASX seems to be saying that trading in RHTN (which is the new shares to be issued) will be suspended until the Rights Issue closes.

so the new shares were to trade on a Deferred Basis, but will not trade now - until R/I closes on 13 June.

I am not sure if the Old shares will trade once the coy reveals details of the Corporate Transaction. Maybe the old shares will resume trading Tuesday?

I think it will be because the market is not fully informed.
ie the mkt is not properly informed as to what the "Corporate Transaction" is related to, and the shares would be traded on an uninformed basis.