diff --git a/app/vmctl/README.md b/app/vmctl/README.md
index fd23c5ba5..000e463a0 100644
--- a/app/vmctl/README.md
+++ b/app/vmctl/README.md
@@ -790,6 +790,9 @@ to allocated CPU resources of your VictoriaMetrics installation.
 to the corresponding source address.
 9. `vmctl` supports `--vm-native-disable-http-keep-alive` to allow `vmctl` to use non-persistent HTTP connections to avoid
 error `use of closed network connection` when run a longer export.
+10. Migrating data with overlapping time range for destination data can produce duplicates series at destination.
+To avoid duplicates on the destination set `-dedup.minScrapeInterval=1ms` for `vmselect` and `vmstorage`.
+This will instruct `vmselect` and `vmstorage` to ignore duplicates with match timestamps.     
 
 In this mode `vmctl` acts as a proxy between two VM instances, where time series filtering is done by "source" (`src`)
 and processing is done by "destination" (`dst`). So no extra memory or CPU resources required on `vmctl` side. Only
diff --git a/docs/vmctl.md b/docs/vmctl.md
index bfa2b9157..d0bef4292 100644
--- a/docs/vmctl.md
+++ b/docs/vmctl.md
@@ -794,6 +794,9 @@ to allocated CPU resources of your VictoriaMetrics installation.
 to the corresponding source address.
 9. `vmctl` supports `--vm-native-disable-http-keep-alive` to allow `vmctl` to use non-persistent HTTP connections to avoid
 error `use of closed network connection` when run a longer export.
+10. Migrating data with overlapping time range for destination data can produce duplicates series at destination.
+To avoid duplicates on the destination set `-dedup.minScrapeInterval=1ms` for `vmselect` and `vmstorage`.
+This will instruct `vmselect` and `vmstorage` to ignore duplicates with match timestamps.
 
 In this mode `vmctl` acts as a proxy between two VM instances, where time series filtering is done by "source" (`src`)
 and processing is done by "destination" (`dst`). So no extra memory or CPU resources required on `vmctl` side. Only