Tested with Sequoia v0.1.13.55-9e98e34 on Windows 7.
If you attempt to convert a file with multiple periods in its name to sprt the resulting sprt file is incorrectly named. For example the file:
foo.r01.e57
is converted to:
foo.sprt
If an existing file foo.sprt is present it will be overwritten without warning. The UI still looks for the cache file foo.r01.sprt, which of course can’t be loaded because it doesn’t exist. The behavior appears to be consistent whether converting individual files or multiple files via the Batch dialog.