SSIS package succesfully completes but does not import 100% of records from flat file into table
Yesterday when I was working with the file I went to the preview tab and I set the Data rows to skip to around 45k so I could preview what some of those rows were looking like.

I was under the impression that the Data rows to skip value would only affect the preview and not actually be used at run time.

Setting the Data rows to skip back to 0 made it so all the records were once again being imported into the table

Some of the other things I did while trouble shooting which might help someone else who is having a similar issue  but due to a different reason can be found here:

ssis-text-file-import-skips-some-rows