First you must download the .tax2017 data file. Then start a NEW 2018 tax return. At the "Begin" screen it will as if you want to transfer from 2017. If TurboTax does not find the .tax2017 file on its own then use the find file button and locate and select the .tax2017 data file.
If it is grayed out then probably yiur user is not an administrator user (which is required) or the .tax2017 file does not have R/W (Read -Write) permissions of everyone. Select the file in the Finder and do a File -> Get Info and scroll down to permissions and change if necessary.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
