Part Export

If a parts score is produced with a specific instrument and then changed and an export to mp3 is performed, the mp3 does not reflect the changed instrument
eg initial instrument was piano, changed to tenor/baritone/bass reexport to mp3 and the instrument is still playing as piano.

Work around: delete and create all parts.

Secondary issue: Renaming parts eg from Baritones to Baritone does not reflect the text change in the tab or score.
Finally a suggestion: when exporting parts could the part name be displayed on the export dialogue?