why EAM asset location cannot be synchronized to correspondent FA asset through manually change the

Hi everyone:

  here i have a question about the integration between EAM and FA, we need to use EAM asset location to sychronized the correspondent FA asset location, so here is what i did for the setup:

  firstly, i setup the asset location in installed base admin:

and linked an EAM asset with an FA asset as well as synchronized it:

after that , i manually changed the location code to another one which was linked to a FA location in installed base, but i found out the correspondent FA location was not auto changed.

so here is my question:

why the FA location cannot be changed?  is that the only way to realize it by sub-inventory transfer in INV module?