Hi. Quick answer is yes!:smile:
I updated from build 10536 (having not upgraded since then). Before I updated, in the Messaging app settings I ensured the 'Sync messages between devices' under "History and sync" was turned on, and 'Download messages from' dropdown menu was set to Any time.
I then did a backup via Settings > Update & security > Backup
Once that had completed I downloaded and installed the new build 10581. Straight after install I decided to do a hard reset.
After the hard reset I did not restore from backup, but started with the phone afresh.
I went into Messaging app and no old text messages were there. However, I went into the settings of the Messaging app and I had to turn on the 'Sync messages between devices' under "History and sync", and change the 'Download messages from' dropdown menu to Any time.
All my text messages were restored. :grin: