Data between Desktop and My Workspace not matching after scheduled refresh

[BCB05]

Hello,

I'm expericing an issue with a dashboard showing incorrect data after a scheduled refresh on My Workspace. The dashboard shows the amount of time (Business Hours between 8am-5pm, EST) an email is in an inbox using Microsoft Exchange Online as the data source. The data is correct in Desktop, but once published and the scheduled refresh takes places, the data does not match on my workspace. 

Has anyone else experienced this? If so, how did you fix? 

Thank you!

My Workspace data (different days of data are after each of the bolded lines):

Desktop data (correct data😞

Dax I'm using below: 

Time in queue =

VAR _Start = Mail[DateTimeReceived]

VAR _End = NOW()

RETURN

SUMX(

    CALCULATETABLE(

        'Calendar',

        DATESBETWEEN('Calendar'[Date], -_Start, _End),

        'Calendar'[Work Day] = 1

    ),

    MAX(MIN('Calendar'[End], _End) - MAX('Calendar'[Start], _Start), 0) * 24

[lbendlin]

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