construct dxf adjacencies

[ktsdesigner]

I'm having some problems with construct dxf. Quite a few in fact but here is one-

When I use construct dxf, the software does not pick up adjacencies the way I would hope. I've ended up with quite a few rooms in the middle of the building which are "external". Now, I understand I am meant to set a "maximum horizontal separation", and rooms closer than this should become connected properly. E.g. thickest internal wall is 300mm, so I set horizontal separation to 0.4m for example, but still the rooms do not connect.

Are there any limits on "maximum horizontal separation" or the thickness of partitions that I don't know about?
Does construct dxf have problems where, for example, a single wall in a room is adjacent to a number of other rooms? Can it only connect in the same way as if I drew from scratch in ModelIT, e.g. with a different wall section for each room that is adjacent on a single wall?

Thanks in advance

[ktsdesigner]

I found a fix. Once model is imported, going to settings-model and changing the horizontal separation value here, followed by a rebuild. For some reason the value here was 100mm, and even though i entered 300mm in construct dxf, the 100mm value seemed to be overriding it. A bug in the software perhaps?