"UNS" on ASX is "UNSDA" to 23rd May due RS, page-21

Hope you recover . . Are you in Aus? or US ?
If in Aus, just trade with them as UNS if that's what you want I guess, - and good luck . .

If in US, I would think best check with your broker how to
trade them as UNS on the asx,
or
convert them to UNIS and trade on nas. (108000 UNS CDIs = 1800 UNIS CS see * below)

. . I guess if they were new UNSDA (asx) stock they must have been bought just following the UNIS Common Stock RS, and along with all earlier UNS stock, (which also briefly became UNSDA), they all reverted to UNS (asx) after 24th May 2016 following the RS. (Reverse split 1 for 10 consolidation assisted in keeping UNIS listing on the nas).

The UNS CDIs quoted on asx were not revalued by RS in quantity or price. (They were briefly treated as UNSDA only during that RS period to allow correct handling between the asx and nasdaq exchanges in "opposite time zones" etc. - eg. so certain trades couldn't produce a "Disallowed situation" overnight for instance . .)

* Before the RS, 1 UNS CDI = 1/6th UNIS (nas) Common Stock, but since the RS they are worth now 1/60th of the "new" consolidated UNIS CS.