From fac4dec840b272ae7e7a20feb4377a7d6e713d9d Mon Sep 17 00:00:00 2001
From: Simon Frei <freisim93@gmail.com>
Date: Tue, 2 Jun 2020 23:05:41 +0200
Subject: [PATCH] lib/db: New VersionList migration fixes (ref #6638) (#6705)

---
 lib/db/schemaupdater.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/db/schemaupdater.go b/lib/db/schemaupdater.go
index 99e3f26a3..1fb646e66 100644
--- a/lib/db/schemaupdater.go
+++ b/lib/db/schemaupdater.go
@@ -731,7 +731,7 @@ func convertVersionList(vl VersionListDeprecated) (VersionList, error) {
 			break
 		}
 		oldPos++
-		if lastVersion.Equal(fv.Version) {
+		if len(newVl.RawVersions) > 0 && lastVersion.Equal(fv.Version) {
 			newVl.RawVersions[newPos].Devices = append(newVl.RawVersions[newPos].Devices, fv.Device)
 			continue
 		}
@@ -747,6 +747,7 @@ func convertVersionList(vl VersionListDeprecated) (VersionList, error) {
 	if len(newVl.RawVersions) == 0 {
 		fv := vl.Versions[oldPos]
 		newVl.RawVersions = []FileVersion{newFileVersion(fv.Device, fv.Version, true, fv.Deleted)}
+		oldPos++
 	}
 	newPos = 0
 outer: