KHarrison said:

when I get the adjusting journal entries do I just need to untick that date..do any adjustments then re-click it again?

Yes.

KHarrison said:

I just want to make sure if I clear that date in settings to do any adjusting entries that I can again tick it off and I won't lose any information or data

No, you won't lose any data.   It's a setting that disallows data entry, nothing more.   It will not have any effect on data that's already been recorded.

KHarrison said:

I had a problem with reconciling, was given advice here at the forums how to fix it, then promptly lost all my data and was unable to do any reconciliations after that so I'm a bit nervous

That's understandable!   un-checking 'keep reconciliation data' will remove all the reconciliation data, and you would have to restore your data file to get it all back.

I think the advice to 'clear the reconciliation data' is given a bit too freely and a bit too early - you have to do a manual reconciliation first, to make sure that the problem is actually in the reconciliation data, and not with someone adjusting a prior period.