The employer field in SAP doesn't accept anything greater than 40 characters. If a user adds an employer with more than 40 characters, it will seem to be successfully added in the system, but really it does not display fully on the profile afterwards because submission to SAP fails.
Unfortunately, you cannot edit the imported field. If you would like to fix it, you have two options:
1. Delete the job entry and manually enter it in.
2. Delete the job entry, go to LinkedIn, shorten the display name to under 40 characters, then re-import.