diff --git a/routeros/mikrotik_serialize.go b/routeros/mikrotik_serialize.go
index b4b8b26b..3f6bfa14 100644
--- a/routeros/mikrotik_serialize.go
+++ b/routeros/mikrotik_serialize.go
@@ -194,6 +194,11 @@ func TerraformResourceDataToMikrotik(s map[string]*schema.Schema, d *schema.Reso
 
 		switch terraformMetadata.Type {
 		case schema.TypeString:
+			if _, ok := setUnsetFields[terraformSnakeName]; ok && value.(string) == "" {
+				// Unset
+				item["!"+mikrotikKebabName] = ""
+				continue
+			}
 			item[mikrotikKebabName] = value.(string)
 		case schema.TypeFloat:
 			item[mikrotikKebabName] = strconv.FormatFloat(value.(float64), 'f', -1, 64)
diff --git a/routeros/resource_ip_firewall_filter.go b/routeros/resource_ip_firewall_filter.go
index 670cde6d..1a26ad0b 100644
--- a/routeros/resource_ip_firewall_filter.go
+++ b/routeros/resource_ip_firewall_filter.go
@@ -12,9 +12,10 @@ import (
 // ResourceIPFirewallFilter https://wiki.mikrotik.com/wiki/Manual:IP/Firewall/Filter
 func ResourceIPFirewallFilter() *schema.Resource {
 	resSchema := map[string]*schema.Schema{
-		MetaResourcePath: PropResourcePath("/ip/firewall/filter"),
-		MetaId:           PropId(Id),
-		MetaSkipFields:   PropSkipFields(`"bytes","packets"`),
+		MetaResourcePath:   PropResourcePath("/ip/firewall/filter"),
+		MetaId:             PropId(Id),
+		MetaSkipFields:     PropSkipFields(`"bytes","packets"`),
+		MetaSetUnsetFields: PropSetUnsetFields(`"dst_address_list","src_address_list","in_interface_list","out_interface_list","in_bridge_port_list","out_bridge_port_list"`),
 
 		"action": {
 			Type:        schema.TypeString,
diff --git a/routeros/resource_ip_firewall_mangle.go b/routeros/resource_ip_firewall_mangle.go
index 1a7c99ea..89122c0f 100644
--- a/routeros/resource_ip_firewall_mangle.go
+++ b/routeros/resource_ip_firewall_mangle.go
@@ -27,9 +27,10 @@ import (
 // ResourceIPFirewallMangle https://wiki.mikrotik.com/wiki/Manual:IP/Firewall/Mangle
 func ResourceIPFirewallMangle() *schema.Resource {
 	resSchema := map[string]*schema.Schema{
-		MetaResourcePath: PropResourcePath("/ip/firewall/mangle"),
-		MetaId:           PropId(Id),
-		MetaSkipFields:   PropSkipFields(`"bytes","packets"`),
+		MetaResourcePath:   PropResourcePath("/ip/firewall/mangle"),
+		MetaId:             PropId(Id),
+		MetaSkipFields:     PropSkipFields(`"bytes","packets"`),
+		MetaSetUnsetFields: PropSetUnsetFields(`"dst_address_list","src_address_list","in_interface_list","out_interface_list","in_bridge_port_list","out_bridge_port_list"`),
 
 		"action": {
 			Type:        schema.TypeString,
diff --git a/routeros/resource_ip_firewall_nat.go b/routeros/resource_ip_firewall_nat.go
index 1870e33e..1be60206 100644
--- a/routeros/resource_ip_firewall_nat.go
+++ b/routeros/resource_ip_firewall_nat.go
@@ -29,9 +29,10 @@ import (
 // ResourceIPFirewallNat https://wiki.mikrotik.com/wiki/Manual:IP/Firewall/NAT
 func ResourceIPFirewallNat() *schema.Resource {
 	resSchema := map[string]*schema.Schema{
-		MetaResourcePath: PropResourcePath("/ip/firewall/nat"),
-		MetaId:           PropId(Id),
-		MetaSkipFields:   PropSkipFields(`"bytes","packets"`),
+		MetaResourcePath:   PropResourcePath("/ip/firewall/nat"),
+		MetaId:             PropId(Id),
+		MetaSkipFields:     PropSkipFields(`"bytes","packets"`),
+		MetaSetUnsetFields: PropSetUnsetFields(`"dst_address_list","src_address_list","in_interface_list","out_interface_list","in_bridge_port_list","out_bridge_port_list"`),
 
 		"action": {
 			Type:        schema.TypeString,