memmpafile R2008b vs R2010b

I have a memmapfile object in Matlab R2008b. In the example below, the fileame has been redacted. I save the variable to a MAT-file.

>> mmf
mmf = 
    Filename: '\\...\ml3dtt-20120417T134720.mmd'
    Writable: false
      Offset: 0
      Format: {'single' [1 32768 149] 'data'}
      Repeat: Inf
        Data: 1x1 struct array with fields:
             data
>> save mmdtest mmf

Then I load the file in Matlab R2010b, and I get a warning and an empty memmapfile object.

>> load mmdtest
Warning: While loading an object of class 'memmapfile':
When constructing an instance of class 'memmapfile', the constructor must preserve the class
of the returned object. 
>> mmf
mmf = 
    Filename: ''
    Writable: false
      Offset: 0
      Format: 'uint8'
      Repeat: Inf
        Data: 0x1 uint8 array
>>

Did something change between R2008b and R2010b? I searched the release notes and did not find anything.

Answer 1

[Sean de Wolski]

Bug Report