Update side-by-side-migrate.md

Author: seligj95

articles/app-service/environment/side-by-side-migrate.md

@@ -110,7 +110,7 @@ If your App Service Environment doesn't pass the validation checks or you try to
 |Migrate cannot be called if IP SSL is enabled on any of the sites.    |App Service Environments that have sites with IP SSL enabled can't be migrated using the side-by-side migration feature. |Remove the IP SSL from all of your apps in the App Service Environment to enable the migration feature. |
 |Cannot migrate within the same subnet.  |The error appears if you specify the same subnet that your current environment is in for placement of your App Service Environment v3.     |You must specify a different subnet for your App Service Environment v3. If you need to use the same subnet, migrate using the [in-place migration feature](migrate.md).     |
 |Subscription has too many App Service Environments. Please remove some before trying to create more.|The App Service Environment [quota for your subscription](../../azure-resource-manager/management/azure-subscription-service-limits.md#app-service-limits) is met. |Remove unneeded environments or contact support to review your options.  |
-|Migrate cannot be called on this ASE until the active upgrade has finished.    |App Service Environments can't be migrated during platform upgrades. You can set your [upgrade preference](how-to-upgrade-preference.md) from the Azure portal. In some cases, an upgrade is initiated when visiting the migration page if your App Service Environment isn't on the current build.  |Wait until the upgrade finishes and then migrate.   |
+|Migrate cannot be called on this ASE until the active upgrade has finished.    |App Service Environments can't be migrated during platform upgrades. You can set your [upgrade preference](how-to-upgrade-preference.md) from the Azure portal. Upgrades take 8-12 hours or longer depending on the size (number of instances/cores) of the App Service Environment.  |Wait until the upgrade finishes and then migrate.   |
 |App Service Environment management operation in progress.    |Your App Service Environment is undergoing a management operation. These operations can include activities such as deployments or upgrades. Migration is blocked until these operations are complete.   |You can migrate once these operations are complete.  |
 |Your InteralLoadBalancingMode is not currently supported.|App Service Environments that have InternalLoadBalancingMode set to certain values can't be migrated using the migration feature at this time. The Microsoft team must manually change the InternalLoadBalancingMode. |Open a support case to engage support to resolve your issue. Request an update to the InternalLoadBalancingMode. |
 |Full migration cannot be called before IP addresses are generated. |This error appears if you attempt to migrate before finishing the premigration steps. |Ensure you complete all premigration steps before you attempt to migrate. See the [step-by-step guide for migrating](#use-the-side-by-side-migration-feature).  |