[OSM-newbies] GPX tracks missing after server upgrade

[openstreetmap.richk1949 at spamgourmet.com]

I stumbled across OSM a couple of months ago and have uploaded a few GPX
tracks to the server (and added ways in JOSM).  I have noticed that
since the server upgrade all (I think) of my uploaded tracks are missing
when I use JOSM to download tracks from the server.  If I look at my
uploaded tracks on the OSM website, they are there and the GPX files can
be downloaded, but the thumbnails are no longer present.  Is this normal
behaviour or is something wrong?

I am hesitating to upload more tracks as I am afraid that they will go
AWOL too!

thanks for your help

Richard