diff --git a/.circleci/config.yml b/.circleci/config.yml
index a1388d158..70e435d3b 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -1017,7 +1017,7 @@ workflows:
             - build
           suite: utest-unit-cli
           target: "./cli/... ./cmd/... ./api/..."
-          resource-class: 2xlarge
+          resource_class: 2xlarge
           get-params: true
       - test:
           name: test-unit-node
@@ -1031,7 +1031,7 @@ workflows:
             - build
           suite: utest-unit-rest
           target: "./blockstore/... ./build/... ./chain/... ./conformance/... ./gateway/... ./journal/... ./lib/... ./markets/... ./paychmgr/... ./tools/..."
-          resource-class: 2xlarge
+          resource_class: 2xlarge
       - test:
           name: test-unit-storage
           requires:
diff --git a/.circleci/template.yml b/.circleci/template.yml
index d633c0b38..9011f1a86 100644
--- a/.circleci/template.yml
+++ b/.circleci/template.yml
@@ -570,11 +570,11 @@ workflows:
           get-params: true
           [[- end -]]
           [[- if eq $suite "unit-cli"]]
-          resource-class: 2xlarge
+          resource_class: 2xlarge
           get-params: true
           [[- end -]]
           [[- if eq $suite "unit-rest"]]
-          resource-class: 2xlarge
+          resource_class: 2xlarge
           [[- end -]]
       [[- end]]
       - test:
diff --git a/cmd/lotus-provider/migrate.go b/cmd/lotus-provider/migrate.go
index d95b6890a..99569daca 100644
--- a/cmd/lotus-provider/migrate.go
+++ b/cmd/lotus-provider/migrate.go
@@ -18,7 +18,6 @@ import (
 	"golang.org/x/xerrors"
 
 	"github.com/filecoin-project/go-address"
-
 	cliutil "github.com/filecoin-project/lotus/cli/util"
 	"github.com/filecoin-project/lotus/lib/harmony/harmonydb"
 	"github.com/filecoin-project/lotus/node/config"
@@ -198,6 +197,16 @@ func fromMiner(cctx *cli.Context) (err error) {
 		}
 	}
 
+	if cctx.Bool("overwrite") {
+		i, err := db.Exec(ctx, "DELETE FROM harmony_config WHERE title=$1", name)
+		if i != 0 {
+			fmt.Println("Overwriting existing layer")
+		}
+		if err != nil {
+			fmt.Println("Got error while deleting existing layer: " + err.Error())
+		}
+	}
+
 	_, err = db.Exec(ctx, "INSERT INTO harmony_config (title, config) VALUES ($1, $2)", name, configTOML.String())
 	if err != nil {
 		return err