Maruti bhau
Expand first will give you dynamic values (i.e. values keep changing throughout the day based on today's new high low values), so prefer using expand last and not first.
This trade needs to be executed in first few minutes of the day, using EMA of High/Low of last 2 days, so we need to know the SR bands before the market opens.
Now after EoD both Expand first and last will show you same values between 3:30 PM and 9:15 AM next day
The difference in the values if any should be due to the difference in the way EMA is calculated on different platforms,
however this should be a minor difference of few points.
Maybe next few days someone can verify this.
Cheers