There shouldn't be any breakage in tracking if you migrate to your own SFTP-hosted server.
I'd say the major issues usually have to do with caching and permissions:
- Your SFTP server may specify a TTL delay that is unusually long and makes it tedious for you to test changes to your libraries.
- A network administrator may change file paths that unknowingly break how the libraries are saved to your server.
- A network administrator who is unaware of this SFTP host may one day revoke its permissions or, worse, shut it down.
- etc
As you can see, most of the time, the issues will be at your client's end, not at Adobe's end.
