Problems with BLOCK's visibilities

[savst14]

Hi!

I have a same question like Goshamen (#653).
I take his example.

Original file ("LINE_CIRCLE.dxf") contains a block ("Line_Circle"). The block has two visibilities (1 - "Line'", 2 - "Circle"). The visibilities are independent of each other (I can activate either one or the other)

1 visibility - Line

2 visibility - Circle

When I work with original file in EZDXF and save the file, the block ("Line_Circle") becames wrong. The block show me 2 visibilities together (simultaneously).

When I resave (resave only) original file ("LINE_CIRCLE.dxf") by EZDXF:

I can find a mistake in txt file.

EZDXF loses a important data about block visibility.

How can I fix it by EZDXF?

I really need to work with a lot of blocks with a lot of visibilities. I hope for your help!