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shift_and_tag ensures that all other dates in the XML-file are adjusted in reference to today's date.
Afterwards it will update the 'recorddatetime'-tag.

Suppose that today's day is 06 Jun 2018:

Image Added

The 'recorddatetime'-tag needs to exist in the XML-file prior to executing it, else it will not work.

Suppose that today's day is 06 Jun 2018:

change the dates according to today's date but it will add a 'recorddatetime'-tag.Image Removed

no_tag_and_no_shift will not create or update the 'recorddatetime'-tag and it will not adjust all other dates according to today's date.

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