Core Machine (Operating system/System info/Roon build number)
Roon 1.7 build 710 running on QNAP TX473 with firmware 4.5.1 build 20210107
Network Details (Including networking gear model/manufacturer and if on WiFi/Ethernet)
TPLink switch, Archer VR2800 router and Virgin media super hub modem.
Audio Devices (Specify what device you’re using and its connection type - USB/HDMI/etc.)
Meridian 210 connected by Ethernet.
Cyrus Signature DAC/preamp connected to streamer via Coax.
Description Of Issue
After updating the firmware today on my QNAP NAS I’ve lost all the recently imported album data when sorting by date added. However, when I go to a particular album I’ve recently imported it gives me the correct imported date - but this isn’t reflected under “sort by import date”.
Under history, everything appears as expected with all the albums and tracks played in the correct order with corresponding dates. On many of these if I then go and search an album it presents it as not having been played before.
This phenomenon first occurred when I changed my SSD in the NAS that contained the ROON core. I restored it from the back up and had lost 3 years worth of data regarding album imported date even though the history was retained correctly.
Any suggestions how to resolve as part of the pleasure of Roon is playing recent discoveries which I can’t now do easily.
Hi @dylan, when I saw these settings I changed the import date default to “file creation” and it seems to have solved the problem.
It still raises the question of why the problem arose following the firmware update on the NAS. Why would the ROON time stamp not have picked up the correct import date anyway because on each album it states the correct import date.
Also provide screenshot showing relative import date for the album in my collection- you can see it’s a relatively old import 
Switched back to file creation time at 11.51am 14 Jan.
Screenshot shows the import date stays the same: