Migration from IS to ESA - money hasn't gone into account

Hello.

I'm currently being migrated from IS to ESA. I sent my ESA50 back about a week ago.

I just checked my online banking and my DLA has gone in but my IS hasn't. They usually go in at the same time. I was told that the money I get would continue until an ESA decision had been made. Has anyone else experienced this on migration?

I have experienced this before when my DLA mobility rate was increased and my DLA was renewed about 10 days ago but at the same rate so not sure it would cause this problem.

Thank you.