example file:
https://drive.google.com/open?id=1JqzQuyjQlHUHmXxrCu0t9yXx8W9WVxnn

the move command 
$w move 14 10 0
------------------------------------
manipulates the item:
    before: 14 <- path ->  --- M 0.0 0.0 L 30.0 40.0 L -30.0 40.0 Z
    after:  14 <- path ->  --- M 10.0 0.0 L 40.0 40.0 L -20.0 40.0 Z
and does not change the matrix attribute:

my summary:
as-is situation:
the move command changes the coords attribute of the item and has not effect to the already defined matrix of this item

to-be situation:
the move command should check the existence of the -matrix value and if yes multiply the move-command-matrix with the existing matrix.

option:
    depending on the tkpath specific items
    check before: (pseudo code)
    if {[$w itemconfigure $item -matrix] != {}}
            set matrixExist [lindex [$w itemconfigure $item -matrix] 4]
            set matrixMove  [tkp::matrix::move $dx $dy]
        $w itemconfigure $item -matrix [$tkp::matrix::mult $matrixMove $matrixExist]
    } else {
        ... existing behaviour
    } 


see also: https://groups.google.com/forum/#!topic/comp.lang.tcl/UIb8tQHGQsQ

Howdy Manfred, sorry, no time left for this problem in 2019,
currently have a construction site pending in Wiener Neudorf.

Hi Christian,
thanks for your yuick answer :)
... so you work close to me, just on the other side of the hill ...?
... just a question of moving and scaling

Manfred, please check if this is a duplicate of ticket [5db15b6fb8],
i.e. in your test snippet change the offending "... move ..." to
"... cmove ..." for testing (if you happen to use the tkpath variant
from www.androwish.org).

Hi Christian,<br>
<br>
yes and no!<br>
<br>
as long as I do not have any matrix transformations on the objects the default move and scale works.<br>
<br>
for matrix transformations on the objects, <br>
    $cv cmove ... can replace  $cv move ...<br>
but for scaling of these objests neither $cv scale ... nor $cv cscale works properly<br>
<br>
for my current usage I found a solution, where I can rotate objects without using matrix transformations:<br>
    I create a path item without transformations:<br>
            set cvItem  [$w create  path $pathDef]<br>
    ... and get the pathDefinition as a (poly-)lines or a list of points<br>
            set objectPoints    [$w itempdf $cvItem]<br>
    ... with a little bit of computing<br>
        ... I can transform, scale or rotate each single point of the pathDefinition manually<br>
<br>
So:<br>
<br>
1st: the issue is not that important in the moment, I have a workaround<br>
2nd: It looks like that cscale does not work properly, or I understand something wrong<br>
<br>
Manfred<br>
<br>

I see. Since you've reported the move operation being problematic and
the "cmove" command solving it, I'm closing this ticket for now.