On the 18.06.2020 the following company changed their name from BLK = Blackham Resources changed to WMX = Wiluna Mining Corp…what is the best way to treat this in Sharesight.
Cheers
Bookshop
Hi @Bookshop welcome to the forum! 
Just taking a quick look, it looks like BLK:ASX is no longer available to search, so I believe this name change has been completed.
Hello Jack, yes it has…but when I imported my data from Selfwealth it was flagged as needing to be fixed, so the only ASX codes available are BLKDA ( which was used as a in and out prior to the name change on the 18.06.2020) and BLKNA which has not been used.