Just upgraded to 981 and importing tickers from a text file no longer works as before. For US Equities, using the format SYM,XYZ,SMART/[PRIM EXCH] results in no tickers being imported. You can get it to work (sort of) by using "AMEX" in place of the correct [PRIM EXCH]. This can be verified by exporting tickers from a page - they will all have AMEX for the exchange field regardless of listing.
I was also having trouble importing tickers. I tried exporting and re-importing from the same file and the import didn’t work at all.