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Exists in IQANrun since 5.00

Scaling of PNG within IQANdesign is unlikely, for that an external editor is better suited. The replace image function is quite nice for this. 

For SVG vector images, there is a similar feature request here:

Forgot to respond. Version 6 of apps are released, see news topic

Update: The MDGN channels support DM1 lamp blink from IQANdesign version 6.00 and also IQANdesign version 5.05