[Python] Why every time I make changes in the plot the Editable Line gets reset

Why every time I make changes in the plot the Editable Line gets reset, I want it to stay persistent unless i remove it

def _add_editable_line(self, track_idx, x_val=None):
"""Add an editable line to the specified track"""
if track_idx >= len(self.tracks):
return

ax = self.figure.axes[track_idx]
track = self.tracks[track_idx]

if x_val is None:
xlim = ax.get_xlim()
x_val = (xlim[0] + xlim[1]) / 2

y_min, y_max = ax.get_ylim()
y_points = np.linspace(y_min, y_max, 100)
x_points = np.full_like(y_points, fill_value=x_val)

line, = ax.plot(x_points, y_points,
color='purple',
linestyle='-',
linewidth=2,
marker='o',
markersize=8,
markerfacecolor='red',
picker=True,
pickradius=10)

markers = []
for x, y in zip(x_points, y_points):
marker, = ax.plot([x], [y], 'o',
color='red',
markersize=10,
picker=True,
pickradius=15)
markers.append(marker)

self.editable_lines[track_idx] = {
'line': line,
'markers': markers,
'ax': ax,
'x': x_val
}

if hasattr(track, 'straight_line_value'):
track.straight_line_value.setText(f"{x_val:.2f}")


[![

the purple line with red dots, i want it to maintain its state, while making changes in the plot. ]1]1

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