[HOTFIX] Update a document instead of replacing it

[jenow]

What does this PR do ?

To update a document we use replaceDocument which has the effect to change the meta data author.
The proper behavior should be that the meta data updater is updated.
This fix simply do a updateDocument instead of a replaceDocument.

fix #495

[codecov-io]

Codecov Report

Merging #507 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #507   +/-   ##
=======================================
  Coverage   84.11%   84.11%           
=======================================
  Files          35       35           
  Lines         793      793           
=======================================
  Hits          667      667           
  Misses        126      126

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