1.9.1 and lost Serviio system properties/profiles

Installed 1.9.1 and all running well.
However I lost the recent tweaks for better artwork i.e. serviio.hdThumbnailResolution and serviio.socketBuffer.
I also lost a profile "Generic HD profile" that I had created (a copy of the Generic DLNA profile with Thumbnail set to "HD").
I have reinstalled them and all is well.
Is there a procedure for correctly installing new versions which overcomes this issue?
However I lost the recent tweaks for better artwork i.e. serviio.hdThumbnailResolution and serviio.socketBuffer.
I also lost a profile "Generic HD profile" that I had created (a copy of the Generic DLNA profile with Thumbnail set to "HD").
I have reinstalled them and all is well.
Is there a procedure for correctly installing new versions which overcomes this issue?