For certain datatypes (like SQL Server geometry types) HVR uses “extended datatype support” instead of native datatype support.
Here is how to setup replication (including capture and refresh) of such datatypes.
Note that extra configuration is needed to replicate these columns.
In this example have a table t1:
CREATE TABLE [dbo].[t1](
[id] [int] IDENTITY(1,1) NOT NULL,
[geom1] [geometry] NULL
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
The table is added the channel. After adding this table to the channel you will see that the column is not present. You will need to add it manually in the Table Properties dialog. It needs to be added with the same name but with datatype clob.