diff --git a/internal/services/synapse/synapse_workspace_resource.go b/internal/services/synapse/synapse_workspace_resource.go
index ebb05d76ef3f..b26eaac50630 100644
--- a/internal/services/synapse/synapse_workspace_resource.go
+++ b/internal/services/synapse/synapse_workspace_resource.go
@@ -897,7 +897,8 @@ func expandWorkspaceRepositoryConfiguration(d *pluginsdk.ResourceData) *synapse.
 		}
 	}
 
-	return nil
+	// API won't clear an existing repository config with nil
+	return &synapse.WorkspaceRepositoryConfiguration{}
 }
 
 func expandIdentityControlSQLSettings(enabled bool) *synapse.ManagedIdentitySQLControlSettingsModel {
diff --git a/internal/services/synapse/synapse_workspace_resource_test.go b/internal/services/synapse/synapse_workspace_resource_test.go
index 32046d79c58d..9986c698a4ca 100644
--- a/internal/services/synapse/synapse_workspace_resource_test.go
+++ b/internal/services/synapse/synapse_workspace_resource_test.go
@@ -118,14 +118,16 @@ func TestAccSynapseWorkspace_azdo(t *testing.T) {
 			Config: r.azureDevOps(data),
 			Check: acceptance.ComposeTestCheckFunc(
 				check.That(data.ResourceName).ExistsInAzure(r),
-				check.That(data.ResourceName).Key("azure_devops_repo.0.account_name").HasValue("myorg"),
-				check.That(data.ResourceName).Key("azure_devops_repo.0.project_name").HasValue("myproj"),
-				check.That(data.ResourceName).Key("azure_devops_repo.0.repository_name").HasValue("myrepo"),
-				check.That(data.ResourceName).Key("azure_devops_repo.0.branch_name").HasValue("dev"),
-				check.That(data.ResourceName).Key("azure_devops_repo.0.root_folder").HasValue("/"),
-				check.That(data.ResourceName).Key("azure_devops_repo.0.tenant_id").IsEmpty(),
 			),
 		},
+		data.ImportStep("sql_administrator_login_password"),
+		{
+			Config: r.repoConfigRemoved(data),
+			Check: acceptance.ComposeTestCheckFunc(
+				check.That(data.ResourceName).ExistsInAzure(r),
+			),
+		},
+		data.ImportStep("sql_administrator_login_password"),
 	})
 }
 
@@ -138,14 +140,9 @@ func TestAccSynapseWorkspace_azdoTenant(t *testing.T) {
 			Config: r.azureDevOpsTenant(data),
 			Check: acceptance.ComposeTestCheckFunc(
 				check.That(data.ResourceName).ExistsInAzure(r),
-				check.That(data.ResourceName).Key("azure_devops_repo.0.account_name").HasValue("myorg"),
-				check.That(data.ResourceName).Key("azure_devops_repo.0.project_name").HasValue("myproj"),
-				check.That(data.ResourceName).Key("azure_devops_repo.0.repository_name").HasValue("myrepo"),
-				check.That(data.ResourceName).Key("azure_devops_repo.0.branch_name").HasValue("dev"),
-				check.That(data.ResourceName).Key("azure_devops_repo.0.root_folder").HasValue("/"),
-				check.That(data.ResourceName).Key("azure_devops_repo.0.tenant_id").Exists(),
 			),
 		},
+		data.ImportStep("sql_administrator_login_password"),
 	})
 }
 
@@ -158,13 +155,16 @@ func TestAccSynapseWorkspace_github(t *testing.T) {
 			Config: r.github(data),
 			Check: acceptance.ComposeTestCheckFunc(
 				check.That(data.ResourceName).ExistsInAzure(r),
-				check.That(data.ResourceName).Key("github_repo.0.account_name").HasValue("myuser"),
-				check.That(data.ResourceName).Key("github_repo.0.git_url").HasValue("https://github.mydomain.com"),
-				check.That(data.ResourceName).Key("github_repo.0.repository_name").HasValue("myrepo"),
-				check.That(data.ResourceName).Key("github_repo.0.branch_name").HasValue("dev"),
-				check.That(data.ResourceName).Key("github_repo.0.root_folder").HasValue("/"),
 			),
 		},
+		data.ImportStep("sql_administrator_login_password"),
+		{
+			Config: r.repoConfigRemoved(data),
+			Check: acceptance.ComposeTestCheckFunc(
+				check.That(data.ResourceName).ExistsInAzure(r),
+			),
+		},
+		data.ImportStep("sql_administrator_login_password"),
 	})
 }
 
@@ -512,6 +512,26 @@ resource "azurerm_synapse_workspace" "test" {
 `, template, data.RandomInteger)
 }
 
+func (r SynapseWorkspaceResource) repoConfigRemoved(data acceptance.TestData) string {
+	template := r.template(data)
+	return fmt.Sprintf(`
+%s
+
+resource "azurerm_synapse_workspace" "test" {
+  name                                 = "acctestsw%d"
+  resource_group_name                  = azurerm_resource_group.test.name
+  location                             = azurerm_resource_group.test.location
+  storage_data_lake_gen2_filesystem_id = azurerm_storage_data_lake_gen2_filesystem.test.id
+  sql_administrator_login              = "sqladminuser"
+  sql_administrator_login_password     = "H@Sh1CoR3!"
+
+  identity {
+    type = "SystemAssigned"
+  }
+}
+`, template, data.RandomInteger)
+}
+
 func (r SynapseWorkspaceResource) azureDevOpsTenant(data acceptance.TestData) string {
 	template := r.template(data)
 	return fmt.Sprintf(`