suffix case changed during convert

[covex]

When I have a file with name

SOMETHING.JPG

and I apply any conversion on it, even I have "Overwrite: Replace" I get second picture with name

SOMETHING.jpg

which is converted.

As XnView removes the selection after conversion, I can not even simply delete the "unconverted" set of pictures.

Example:

I have
S1.JPG S2.JPG

I select both (s: stays for selection)
s:S1.JPG s:S2.JPG

I choose convert... and then any type of conversion. The resul is
s:S1.JPG S1.jpg S2.JPG S2.jpg

Expected result
s:S1.JPG s:S2.JPG
which are converted.

[xnview]

When I have a file with name

SOMETHING.JPG

and I apply any conversion on it, even I have "Overwrite: Replace" I get second picture with name

SOMETHING.jpg

which is converted.

As XnView removes the selection after conversion, I can not even simply delete the "unconverted" set of pictures.

Example:

I have
S1.JPG S2.JPG

I select both (s: stays for selection)
s:S1.JPG s:S2.JPG

I choose convert... and then any type of conversion. The resul is
s:S1.JPG S1.jpg S2.JPG S2.jpg

Expected result
s:S1.JPG s:S2.JPG
which are converted.

Yes, right, because i remove extension and add the standard extension which is in lowercase.

[covex]

Many cameras create file names in uppercase. This makes the usage of XnView conversions bit confusing. (Well I know now that it is a problem of NConvert, not in XnView itself.)