From 6b8cbbd12b9f0d9a6a12cc43f0c36cc5e7de7d90 Mon Sep 17 00:00:00 2001
From: Quincy Morgan <2046746+quincylvania@users.noreply.github.com>
Date: Thu, 29 Oct 2020 13:40:45 -0400
Subject: [PATCH] Don't remove `source:*` tags when downgrading features (close
 #8097)

---
 modules/operations/downgrade.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/modules/operations/downgrade.js b/modules/operations/downgrade.js
index a37ee0927..7177cf9af 100644
--- a/modules/operations/downgrade.js
+++ b/modules/operations/downgrade.js
@@ -81,8 +81,10 @@ export function operationDowngrade(context, selectedIDs) {
                             key.match(/^building:.{1,}/) ||
                             key.match(/^roof:.{1,}/)) continue;
                     }
-                    if (type !== 'generic' && key.match(/^addr:.{1,}/)) continue;
-
+                    if (type !== 'generic') {
+                        if (key.match(/^addr:.{1,}/) ||
+                            key.match(/^source:.{1,}/)) continue;
+                    }
                     delete tags[key];
                 }
                 graph = actionChangeTags(entityID, tags)(graph);