Part 1: Digital Markets Chapter 4: Pro-Competition Interventions Section 52: Replacement of pro-competition orders
This section gives the CMA the power to replace a pro-competition order. This allows the CMA to effectively address competition problems identified during a PCI investigation, implementing targeted remedies through the iteration of pro-competition orders. The CMA may trial an intervention, or initially adopt lighter-touch pro-competition orders designed to address the competition problem, before escalating them (for example, by including more onerous obligations, or greater detail in the order) where the CMA assesses it is appropriate to do so. This will include considerations of proportionality because of the requirement in section 46 that PCIs be proportionate.
	Subsection (1) gives the CMA the power to replace a pro-competition order if it determines that it is appropriate to do so. The CMA will particularly have regard to the impact of the existing pro-competition order on the competition problem (and where relevant the related detriment to UK users or customers), and whether circumstances have changed since the existing order was made in a way which means alternative provision is now appropriate.
	Subsection (2) makes express provision that pro-competition orders which made provision on a trial basis may be replaced to update the terms and parameters of the trial (e.g. the design of a trial, the length of the trial period), or to convert the trial into a pro-competition order that will address the competition problem on a non-trial basis. In doing so the CMA may have regard to that trial as well as other trials the CMA has conducted, including if that trial was done with a different designated undertaking.