Why is PolyPolygonShape excluded from DML export?

[Regina Henschel]

Hi Miklos,

thank you for pointing me to that bug report.

Miklos Vajna schrieb am 21.07.2021 um 08:46:
> Hi Regina,
> 
> On Tue, Jul 20, 2021 at 12:08:30AM +0200, Regina Henschel <rb.henschel at t-online.de> wrote:
>> Is it possible, that the exclusion was only forgotten to remove, or is there
>> a valid reason?
> 
> This was added in 3c0a7cf4f67720f2cca2c4eb543f838d5b644e7f for
> https://bugs.documentfoundation.org/show_bug.cgi?id=75254. If that
> problem no longer happens when you remove the PolyPolygonShape from
> isSupportedDMLShape(), then I see no problems with that.

The document attached to that bug report has no problem with roundtrip. 
I have put removing the restriction on my ToDo-List.

Kind regards
Regina