Sorry folks it was inevitable. Lastpass was bought out in by LogMeIn in late 2015. Their [LogMeIn] existing products are more conference call, webinar related.https://www.logmeininc.com/products
It would seem that they want LastPass to be more of a "shared experience". I have an ongoing Ticket with them started 5th April 19' and I finally got an answer 19th April 19'.
In a nutshell LP says "however the process of a specific "Form Fill" item has changed". In other words it no longer exists. Feel free to have a look at the nonsense and waffle they purport to be help. https://lastpass.com/my.php?token=WQKMJ ... orefresh=1
I recommend Bitwarden, alas it does not have form fills either but their free version is every bit as good as LP. Bitwarden will except your export csv file and will as accept the passwords exactly. Form fills can be a bit more time consuming. Bitwarden has a basic template but you can add custom fields.https://bitwarden.com
Hope it helps, I am just like the rest of you fed up with Lastpass and their arrogant attitude towards their customers.