diff --git a/README.md b/README.md
index ee09f40..81bbc06 100644
--- a/README.md
+++ b/README.md
@@ -234,6 +234,8 @@ docker run \
     import
 ```
 
+Warning: enabling `FLAT_NOTES` together with `UPDATES` only works for entire planet imports (without a `.poly` file).  Otherwise this will break the automatic update script. This is because trimming the differential updates to the specific regions currently isn't supported when using flat nodes.
+
 ### Benchmarks
 
 You can find an example of the import performance to expect with this image on the [OpenStreetMap wiki](https://wiki.openstreetmap.org/wiki/Osm2pgsql/benchmarks#debian_9_.2F_openstreetmap-tile-server).
diff --git a/run.sh b/run.sh
index 7141981..1328dc3 100755
--- a/run.sh
+++ b/run.sh
@@ -2,8 +2,6 @@
 
 set -euo pipefail
 
-declare -p | grep -Ev 'BASHOPTS|BASH_VERSINFO|EUID|PPID|SHELLOPTS|UID' > /container.env
-
 function createPostgresConfig() {
   cp /etc/postgresql/14/main/postgresql.custom.conf.tmpl /etc/postgresql/14/main/conf.d/postgresql.custom.conf
   sudo -u postgres echo "autovacuum = $AUTOVACUUM" >> /etc/postgresql/14/main/conf.d/postgresql.custom.conf