Currently, when editing images in pixatool v157, it seems that the alpha channel is lost when selecting a pallete. 
However, if you leave the pallete at 0, the alpha channel is revived again. 
pixatool is a very cool program, so I personally thank you for making this program. 
However, since pixatool blows up the alpha channel, I am exporting and combining an image in photoshop with no palette set and an image with palette set . 
This is very annoying and exhausting.
I highly value your ability to develop this program. 
I think you can create a function that embeds an alpha value into a stored image. 
This program can be more productive, and it's a great one. 
If you can improve these areas, I can recommend this program to the workers around me. 
I hope you to improve these features in the next version