FM2016 Editor - How to edit start of pre-season date

I have added leagues down to level 5 in Germany, however the earliest pre-season start date I have as an option when loading the game is 17th July 2015. Is there anyway I can edit the pre-season start date back to 26th June 2015, like if you load the German leagues with the original database?

yes via advanced rules

however select another playable nation on start up and see what start date options are given there are many with early start dates

Cheers kingrobbo,

How do I go about via the advanced rules?

Sorry to be awkward!

Doesn't matter what you change, even in the advanced rules, it's a known bug.

I use the work-around to load the czech league, which offers an early start. You could add the unedited Swiss league, which does also start in June.

http://community.sigames.com/showthread.php/442891-Start-date-does-not-match-the-start-of-the-season

wasn't aware of that bug

but as said earlier using another nation is easiest way no work just select on stat up

Cheers fellas,

Tried to edit via the advanced options but it wouldn't verify Bundesliga.1 for some reason. It kept coming up 'minimum of 90 teams, maximum of 95 teams for regional league, 97 detected', even though the regional leagues were valid. Reverted back to basic rules and started a new season under the czech start date.