Timelog Timelock

We have recently changed company wide how we track our time efforts.

Now we would like to keep the old tasks and structures to keep the time for comprassion.

The issue that we are currently facing is the following:

We wanted to use the Timelock feature for those Tasks, as to freeze the timelogs. However you are unable to select for example the following:

Lock dates from Day A to infinity

Lock dates from infinity to Day B
Lock dates all.

We don't want any alteration on the timelogs so for us the last option with "Lock dates all" would be ideal, however this is currently not possible... Is there any feasable way out side of Setting the start day to 01.01.1901 and the duration to 999 days?

The automated message generated by locking the dates is also very confusing. As it does not mention what has been locked, many of our not as Wrike-Savy colleagues get confused by the notification.

Are there any plans to bring more options to this functionallity?