I've analyzed the natural possibilities of combination to resolve the presets.

CREATE NEW PRESET FLOWS
The flows that is working are: A1, B1, B2.
The flows that is not working are: A2, B2, B3.

EDIT PRESETS FLOWS
The flows that is working are: C1, C1.
The flows that is not working are: C3, C4.

=============================================
A- NEW WIDGETS 2.8
---

[Schema flow A1]
 _
| |_Tool Options tab
	+ Edit Parameters
 	+ Change Colors
 _
| |_Tool Presets list tab
 	+ Click New Preset button
 _
| |_Tool Preset Editor
	+ Name
	+ Apply On/Off
	+ Click Save button
--------------------------------
A1 - Works

[Schema flow A2]
 _
| |_Tool Presets list tab
 	+ Click New Preset button
 _
| |_Tool Options tab
	+ Edit Parameters
 	+ Change Colors
 _
| |_Tool Preset Editor
	+ Name
	+ Apply On/Off
	+ Click Save button
--------------------------------
A2 - Don't Works

=============================================
B- OLD MORE NEW WIDGETS MIXED (2.6+ AND 2.8+)
---

[Schema flow B1]
 _
| |_Tool Presets list tab
 	+ Click New Preset button
 _
| |_Tool Preset Editor
	+ Name
	+ Apply On/Off
 _
| |_Tool Options tab
	+ Edit Parameters
 	+ Change Colors
	+ Click Save button
	  \_Choose the same preset name
 _
| |_Tool Preset Editor
	+ Name
	+ Apply On/Off
	+ Click Save button
--------------------------------
B1 - Works

[Schema flow B2]
 _
| |_Tool Options tab
	+ Up side right menu
	  \_Tool Options Menu
	    \_Save Tool Preset
		\_New Tool Preset
	Or
	+ Save button (bottom)
	  \_New Tool Preset
	---
	+ Edit Parameters
 	+ Change Colors
	+ Click Save button
	  \_Choose the same preset name
 _
| |_Tool Preset Editor
	+ Name
	+ Apply On/Off
	+ Click Save button
--------------------------------
B2 - Works

[Schema flow B3]
 _
| |_Tool Options tab
	+ Up side right menu
	  \_Tool Options Menu
	    \_Save Tool Preset
		\_New Tool Preset
	Or
	+ Save button (bottom)
	  \_New Tool Preset
	---
	+ Edit Parameters
 	+ Change Colors
 _
| |_Tool Preset Editor
	+ Name
	+ Apply On/Off
	+ Click Save button
--------------------------------
B3 - Don't Works

Notes:
1) The "Save" button on "Tool Preset Editor" don't synchronize the data from Tool Options, save only the applies.
2) The "Save" button of the Tool Options tab synchronize the data... but we must to do attention to choose the correct preset name previously created by Tool Preset list tab widget.

=============================================
C- EDIT PRESET
---

VIA TOOL OPTIONS TAB (OLD WIDGETS)
----

[Schema flow C1]
 _
| |_Tool Options tab
	+ Up side right menu
	  \_Tool Options Menu
	    \_Edit Tool Preset
		\_Choose Tool Preset
 _
| |_Tool Preset Editor
	+ Name
	+ Apply On/Off
 _
| |_Tool Options tab
	+ Edit Parameters
 	+ Change Colors
	+ Click Save button
	  \_Choose the same preset name
 _
| |_Tool Preset Editor
	+ Apply On/Off
	+ Click Save button
--------------------------------
C1 - Works

[Schema flow C2 (Mixed old with new widgets)]
I restore the preset via the list > Tool Presets List and synchronize data using the save button on Tool Options.
 _
| |_Tool Presets tab list
	+ Choose Preset
	+ Click Edit this Preset button (second on bottom - lr)
 _
| |_Tool Preset Editor
	+ Name
	+ Apply On/Off
 _
| |_Tool Options tab
	+ Edit Parameters
 	+ Change Colors
	+ Click Save button
	  \_Choose the same preset name
 _
| |_Tool Preset Editor
	+ Apply On/Off
	+ Click Save button
--------------------------------
C2 - Works

[Schema flow C3]
 _
| |_Tool Options tab
	+ Up side right menu
	  \_Tool Options Menu
	    \_Edit Tool Preset
		\_Choose Tool Preset
 _
| |_Tool Preset Editor
	+ Name
	+ Apply On/Off
 _
| |_Tool Options tab
	+ Edit Parameters
 	+ Change Colors
 _
| |_Tool Preset Editor
	+ Apply On/Off
	+ Click Save button
--------------------------------
C3 - Don't Works

[Schema flow C4]
 _
| |_Tool Presets tab list
	+ Choose Preset
	+ Click Edit this Preset button (second on bottom - lr)
 _
| |_Tool Preset Editor
	+ Name
	+ Apply On/Off
 _
| |_Tool Options tab
	+ Edit Parameters
 	+ Change Colors
 _
| |_Tool Preset Editor
	+ Apply On/Off
	+ Click Save button
--------------------------------
C4 - Don't Works
