The following contact has committed to helping others within their own breed with information regarding Merle testing.
The test results on this family of Dachshunds were very unexpected - previous tests on Ma+/m dogs show some type of Merle pattern.
As you will see these Ma+/m dogs express as "solid" non-merles.
As well notice the base pair numbers for Ma+ -
they fall right in line with the allele - not near the border of Ma.
DJ - Sire - "Solid" - Non-Merle In Expression - Ma+/m - 258/m
Note The Marbling In The Eye