diff --git a/docs/en/Migration-Guides/Abp-4_3.md b/docs/en/Migration-Guides/Abp-4_3.md
index 6464455011..ddc40189a0 100644
--- a/docs/en/Migration-Guides/Abp-4_3.md
+++ b/docs/en/Migration-Guides/Abp-4_3.md
@@ -2,5 +2,30 @@
 
 ## Blazor UI
 
-- `PageHeader` component has been moved to the`Volo.Abp.AspNetCore.Components.Web.Theming.Layout` namespace.
+Implemented the Blazor Server Side support with this release. It required some packages and namespaces arrangements. **Existing Blazor (WebAssembly) applications should done the changes explained in this section**.
 
+### Namespace Changes
+
+- `AbpBlazorMessageLocalizerHelper` -> moved to Volo.Abp.AspNetCore.Components.Web
+- `AbpRouterOptions` -> moved to Volo.Abp.AspNetCore.Components.Web.Theming.Routing
+- `AbpToolbarOptions` and `IToolbarContributor` -> moved to Volo.Abp.AspNetCore.Components.Web.Theming.Toolbars
+- `IAbpUtilsService` -> moved to Volo.Abp.AspNetCore.Components.Web
+- `PageHeader` -> moved to `Volo.Abp.AspNetCore.Components.Web.Theming.Layout`.
+
+In practice, if your application is broken because of the `Volo.Abp.AspNetCore.Components.WebAssembly.*` namespace, please try to switch to `Volo.Abp.AspNetCore.Components.Web.*` namespace.
+
+Remember to change namespaces in the `_Imports.razor` files.
+
+### Package Changes
+
+No change on the framework packages, but **module packages are separated as Web Assembly & Server**;
+
+* Use `Volo.Abp.Identity.Blazor.WebAssembly` NuGet package instead of `Volo.Abp.Identity.Blazor` package. Also, change `AbpIdentityBlazorModule` usage to `AbpIdentityBlazorWebAssemblyModule` in the `[DependsOn]` attribute on your module class.
+* Use `Volo.Abp.TenantManagement.Blazor.WebAssembly` NuGet package instead of `Volo.Abp.TenantManagement.Blazor` package. Also, change `AbpTenantManagementBlazorModule` usage to `AbpTenantManagementBlazorWebAssemblyModule` in the `[DependsOn]` attribute on your module class.
+* Use `Volo.Abp.PermissionManagement.Blazor.WebAssembly` NuGet package instead of `Volo.Abp.PermissionManagement.Blazor` package. Also, change `AbpPermissionManagementBlazorModule` usage to `AbpPermissionManagementBlazorWebAssemblyModule` in the `[DependsOn]` attribute on your module class.
+* Use `Volo.Abp.SettingManagement.Blazor.WebAssembly` NuGet package instead of `Volo.Abp.SettingManagement.Blazor` package. Also, change `AbpSettingManagementBlazorModule` usage to `AbpSettingManagementBlazorWebAssemblyModule` in the `[DependsOn]` attribute on your module class.
+* Use `Volo.Abp.FeatureManagement.Blazor.WebAssembly` NuGet package instead of `Volo.Abp.FeatureManagement.Blazor` package. Also, change `AbpFeatureManagementBlazorModule` usage to `AbpFeatureManagementBlazorWebAssemblyModule` in the `[DependsOn]` attribute on your module class.
+
+### Other Changes
+
+* `EntityAction.RequiredPermission` has been marked as obsolete, because of performance reasons. It is suggested to use the `Visible` property by checking the permission/policy yourself and assigning to a variable. 
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