diff --git a/cloudapi/config.go b/cloudapi/config.go
index e113ff59645..e5590babb39 100644
--- a/cloudapi/config.go
+++ b/cloudapi/config.go
@@ -188,6 +188,9 @@ func (c Config) Apply(cfg Config) Config {
 	if cfg.DeprecatedToken.Valid {
 		c.DeprecatedToken = cfg.DeprecatedToken
 	}
+	if cfg.ProjectID.Valid && cfg.ProjectID.Int64 > 0 {
+		c.ProjectID = cfg.ProjectID
+	}
 	if cfg.Name.Valid && cfg.Name.String != "" {
 		c.Name = cfg.Name
 	}
@@ -197,21 +200,25 @@ func (c Config) Apply(cfg Config) Config {
 	if cfg.LogsTailURL.Valid && cfg.LogsTailURL.String != "" {
 		c.LogsTailURL = cfg.LogsTailURL
 	}
+	if cfg.PushRefID.Valid {
+		c.PushRefID = cfg.PushRefID
+	}
 	if cfg.WebAppURL.Valid {
 		c.WebAppURL = cfg.WebAppURL
 	}
 	if cfg.NoCompress.Valid {
 		c.NoCompress = cfg.NoCompress
 	}
-	if cfg.ProjectID.Valid && cfg.ProjectID.Int64 > 0 {
-		c.ProjectID = cfg.ProjectID
+	if cfg.MaxMetricSamplesPerPackage.Valid {
+		c.MaxMetricSamplesPerPackage = cfg.MaxMetricSamplesPerPackage
 	}
 	if cfg.MetricPushInterval.Valid {
 		c.MetricPushInterval = cfg.MetricPushInterval
 	}
-	if cfg.MaxMetricSamplesPerPackage.Valid {
-		c.MaxMetricSamplesPerPackage = cfg.MaxMetricSamplesPerPackage
+	if cfg.MetricPushConcurrency.Valid {
+		c.MetricPushConcurrency = cfg.MetricPushConcurrency
 	}
+
 	if cfg.AggregationPeriod.Valid {
 		c.AggregationPeriod = cfg.AggregationPeriod
 	}
diff --git a/cloudapi/config_test.go b/cloudapi/config_test.go
new file mode 100644
index 00000000000..577d27ac992
--- /dev/null
+++ b/cloudapi/config_test.go
@@ -0,0 +1,70 @@
+/*
+ *
+ * k6 - a next-generation load testing tool
+ * Copyright (C) 2021 Load Impact
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+package cloudapi
+
+import (
+	"testing"
+	"time"
+
+	"github.com/loadimpact/k6/lib/types"
+	"github.com/stretchr/testify/assert"
+	"gopkg.in/guregu/null.v3"
+)
+
+func TestConfigApply(t *testing.T) {
+	empty := Config{}
+	defaults := NewConfig()
+
+	assert.Equal(t, empty, empty.Apply(empty))
+	assert.Equal(t, empty, empty.Apply(defaults))
+	assert.Equal(t, defaults, defaults.Apply(defaults))
+	assert.Equal(t, defaults, defaults.Apply(empty))
+	assert.Equal(t, defaults, defaults.Apply(empty).Apply(empty))
+
+	full := Config{
+		Token:                           null.NewString("Token", true),
+		DeprecatedToken:                 null.NewString("DeprecatedToken", true),
+		ProjectID:                       null.NewInt(1, true),
+		Name:                            null.NewString("Name", true),
+		Host:                            null.NewString("Host", true),
+		LogsTailURL:                     null.NewString("LogsTailURL", true),
+		PushRefID:                       null.NewString("PushRefID", true),
+		WebAppURL:                       null.NewString("foo", true),
+		NoCompress:                      null.NewBool(true, true),
+		MaxMetricSamplesPerPackage:      null.NewInt(2, true),
+		MetricPushInterval:              types.NewNullDuration(1*time.Second, true),
+		MetricPushConcurrency:           null.NewInt(3, true),
+		AggregationPeriod:               types.NewNullDuration(2*time.Second, true),
+		AggregationCalcInterval:         types.NewNullDuration(3*time.Second, true),
+		AggregationWaitPeriod:           types.NewNullDuration(4*time.Second, true),
+		AggregationMinSamples:           null.NewInt(4, true),
+		AggregationSkipOutlierDetection: null.NewBool(true, true),
+		AggregationOutlierAlgoThreshold: null.NewInt(5, true),
+		AggregationOutlierIqrRadius:     null.NewFloat(6, true),
+		AggregationOutlierIqrCoefLower:  null.NewFloat(7, true),
+		AggregationOutlierIqrCoefUpper:  null.NewFloat(8, true),
+	}
+
+	assert.Equal(t, full, full.Apply(empty))
+	assert.Equal(t, full, full.Apply(defaults))
+	assert.Equal(t, full, full.Apply(full))
+	assert.Equal(t, full, empty.Apply(full))
+	assert.Equal(t, full, defaults.Apply(full))
+}
diff --git a/cmd/config.go b/cmd/config.go
index 8ad10b75faf..a0b3e80bd58 100644
--- a/cmd/config.go
+++ b/cmd/config.go
@@ -80,6 +80,9 @@ func (c Config) Apply(cfg Config) Config {
 	if cfg.NoUsageReport.Valid {
 		c.NoUsageReport = cfg.NoUsageReport
 	}
+	if len(cfg.Collectors) > 0 {
+		c.Collectors = cfg.Collectors
+	}
 	return c
 }
 
diff --git a/output/types.go b/output/types.go
index efac5014aeb..dfe074c4f50 100644
--- a/output/types.go
+++ b/output/types.go
@@ -83,7 +83,7 @@ type WithThresholds interface {
 // TODO: add some way for outputs to report mid-test errors and potentially
 // abort the whole test run
 
-// WithRunStatusUpdates means the output can receivetest run status updates.
+// WithRunStatusUpdates means the output can receive test run status updates.
 type WithRunStatusUpdates interface {
 	Output
 	SetRunStatus(latestStatus lib.RunStatus)