Bug: Unable to save special characters in macro

I would like to report a bug.

I need to use "▲" and "▼" in the macro.

Example of my case:

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If engTransString.State(pslStateTranslated) Then
dstTransString.Text = "▲" + engTransString.Text
Else
dstTransString.Text = "▼" + dstTransString.Text
End If
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

The macro works well.

But anytime I save the macro and load it next time these special character are replaced by "?" character.

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If engTransString.State(pslStateTranslated) Then
dstTransString.Text = "?" + engTransString.Text
Else
dstTransString.Text = "?" + dstTransString.Text
End If
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

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