Thanks.
4 answers
Ines Garcia (get: Agile) 
Forum Ambassador
Hi Rick,
Im assuming this is Marketing Cloud? If so here it goes:
When you import subscribers, Email Studio logs results for review. Data such as import file name, imported subscribers list ID, number of subscribers imported, number of existing subscribers updated with new data, number of records in the import file not imported and the data fields for each subscriber record not imported, along with the reason for the unsuccessful import are in the log.
If you chose to be emailed upon import completion, the email includes a log file in the same format with information about the skipped records in .txt, or .csv format. The body of the email itself summarizes the import results.
If you did not choose to be emailed upon import completion, the final Import Subscriber Wizard dialog box provides a summary of results. You can also select the option of downloading a detailed log file in the same format as your import file, such as .txt, or .csv.
Hope this helps,
Ines
PS: Possible reasons why records are not imported:
The email address was unrecognizable. For example, the @ symbol is missing, or the period after the domain name is missing, such as examplecom versus example.com).
The data mapped to an attribute with restricted values did not match any of the possible values defined for the attribute.
The data mapped to an attribute was not the same data type as the attribute. For example, the import file contains $1000 for an attribute defined as numeric, which accepts numbers only and not symbols.
