Technical Blog Post
Unable to upload migration package through Internet Explorer 11.
If you are unable to upload your migration manager package using IE 11 this is a known issue. There has been a fix made available for 18.104.22.168 and newer to correct this issue.
Please reference the link below for more details. If you have any additional questions pertaining to this issue or how to get this fix please feel free to open a support ticket with IBM Maximo Support.