It is a bit confusing for us. Why not they just change the token name to IFS instead of the same name, HAT? Thanks.
New HAT tokens are traded only on Idex, so if you got HAT tokens on EtherDelta, then you have old tokens. There's no last day for the swap. Only the support from the team about the swap will be available until the end of this month.
The token's name is HAT and the only reason why everything is so confusing is because EtherDelta didn't bother to answer team's numerous e-mailed about swap support. That's why the team had to do manual swap so no one gets left behind.