I just tested it and it works
But one thing i find odd
Which is not something terrible just my nitpicking so don't worry
It saves last file used if it was sliced
If i go straight for write images to disk
Then it does not keep last image used
For example
I sliced water spritsheet by clicking slice
Then write to disk
Now i open stone spritesheet and i go straight for write to disk
Last image used was for stone
Yet when i close and open Slicer again
Image automatically loaded will be water
Since this is last on which i used slice
And it should stone
Since it was last image i written to disk
I think write images to disk should save last file used
If only one would do it and not slice button