PicSender itself can not remember zero settings from one session to another. That is a function of grbl.
If you have the HOMING function enabled and use PicSender’s built in probing feature, then PicSender sends commands to grbl that save your zero positions during a power down, and the zero positions will be available to PicSender when you next power up and home your machine.
I do not know if the current Triquerta code is using G92 or G10 to set work zeros, but it used to use G92, which will not save your work zero positions during a power down. I suggest you ask Charley to look into this for you.
As a work around for now, when you zero with the Triquerta, be sure to move to the axes to their zero positions as set by the Triquerta, then on PicSender’s main screen click the ‘Goto 0’ buttons for each axis, and then click the ‘Zero _’ axis buttons before making any other axis moves. Your work positions should then be saved at the bit’s position when you click the buttons. This assumes that you do use the homing function.
Also, again if you do home your machine at start up, when you set and move to your work zeros using the Triquerta, you can set the G28 or G30 positions (using the G28.1 or G30.1 buttons) to save your zero positions, and at next startup just home, then click either the G28 or G30 button and your machine will move to its work zero position. Best to raise your spindle up away from the Z zero position first as the spindle will travel in a straight line to the work zero position.
Hope this helps. Please contact me via email if you need more assistance.