Some songs were deleted when an SSP update was completed(TS086)
Some songs were deleted from the song database when an SSP update was completed.
Using "Stock Hymns" for a user defined collection causes songs with that collection label to be deleted when an update to SSP is done.
This is caused by a conflict with the predefined but hidden collections label called "Stock Hymns". This is reserved for the Stock Hymns that are included with SSP. Because the included stock songs may change over time the Stock Hymns library is replaced each time SSP is installed or updated.
Don't use "Stock Hymns" as a user defined collection label.