During generation of an IP regardless of the use of the Core Container feature, the support files are automatically placed in the locations described in the previous sections, Simulating with Core Container and Support Files for Core Container.
In the case you only have the XCIX file and want the support files exported for you, type the following at the Tcl Console:
export_ip_user_files -of_objects [get_ips <ip_name>]
If you omit the option, the Vivado tools export all IP files in the design again; regardless of whether you are using the Core Container or not. All files for the Core Container are taken from the XCIX file. For XCI-based IP, the files are copied from the IP directory.