[Tkinter] Tkinter delete values in Entries, when I'm changing the Frame

[robertoCarlos]

import tkinter as tk

class Win1:
    

    def __init__(self, master):
        
        
        self.master = master
        self.master.title("Gap Assessment")
        self.topFrame = tk.Frame(self.master)
        self.topFrame.grid(row=0, column=0, sticky='news', ipady = 5)
        self.A_GapFrame = tk.Frame(self.master)
        self.B_GapFrame = tk.Frame(self.master)
        self.C_GapFrame = tk.Frame(self.master)
        self.E_GapFrame = tk.Frame(self.master)
        self.F_GapFrame = tk.Frame(self.master)
        self.K_GapFrame = tk.Frame(self.master)


        
        # Create a Tkinter variable
        self.gapType = tk.StringVar(self.master)
        # Dictionary with options
        self.choiceGap =  ['AFrame','BFrame']
        # self.choiceGap = sorted(self.choiceGap)
        self.gapType.set('') # set the default option
        self.ctngMenu = tk.OptionMenu(self.topFrame, self.gapType, *self.choiceGap, command=self.chioseGap_handle)
        self.ctngMenu.grid(row = 1, column =2)

    def chioseGap_handle(self, selected):

        if selected == 'AFrame':
            self.A_GapFrame.tkraise()
            self.subframe_AGap()
            self.A_GapFrame.grid(row=2, column=0, sticky='news')
            
        if selected == 'BFrame':
            self.B_GapFrame.tkraise()
            self.subframe_BGap()
            self.B_GapFrame.grid(row=2, column=0, sticky='news') 


            
    def subframe_AGap(self):
            self.jobNameA_text = tk.StringVar()
            self.jobNameA_entry = tk.Entry(self.A_GapFrame, textvariable = self.jobNameA_text)
            self.jobNameA_entry.grid(row=1, column=0, sticky='news') 
            
    def subframe_BGap(self):
            
            self.jobNameB_text = tk.StringVar()
            self.jobNameB_entry = tk.Entry(self.B_GapFrame, textvariable = self.jobNameB_text)
            self.jobNameB_entry.grid(row=2, column=0, sticky='news') 
        

        

root = tk.Tk()
root.geometry("+50+50")
app = Win1(root)
root.mainloop()

Thank you for your attention. You can see my problem when you run this code. You will see that, if you enter something in the Entry and then select in the OptionMenue another Frame, you will see that the Entry is empty when you go back to the first Frame.