I have Jdownloader 2 portable, and the download list disappeared after a normal exit of the program. When I reloaded, I had no list, and saw that the cfg folder, had very small downloadList and linkcollector files (as opposed to my huge donwload list). Also the settings were resetted.
I ve uploaded the log file without knowing when EXACTLY the problem happened cause I messing around this time table in order to find a solution. But for sure, one of the logs, shows my reported problem
Thanks in advance

[Jiaz]

Please check your environment. What you describe sounds more like running a JDownloader from temp folder or different one.
In case there are issues with loading download/linkcollector list, JDownloader automatically creates a backup. Also settings resetted sounds more like there either is sort of virtual folder protection, or you're running a different JDownloader
There are no traces of any error at all.
The launcher is from PortableApps and not from us, so we can't tell how it works/what it does but it looks like there are virtual folders involved as the logs contain different JDownloader folders
for example
/Desktop/Shortcuts/__Network/JDownloaderPortable
/Desktop///Shortcuts///_/_/Network///J/Downloader/Portable///App
\AppData\Local\Temp\JDownloaderPortableTemp