A Professional Services Organisation’s Move to Business Central SaaS with Mercurius IT 

Customer Overview

A UK-based professional services organisation sought to modernise its ageing Microsoft Dynamics NAV system by moving to a cloud–based ERP platform. Its objectives were to improve system performance, eliminate outdated customisations, introduce digital expense management, gain licensing flexibility, and remove the burden of manual upgrades. Mercurius IT was selected to help the organisation transition seamlessly to Microsoft Dynamics 365 Business Central SaaS. 

Business Challenges

Performance Issues & On‑Prem Infrastructure Costs

NAV was slowing down and maintaining on‑premise hardware and support resulted in recurring costs. 

Outdated Spindle Functionality

Legacy Spindle‑related objects were no longer needed and complicated the upgrade path. 

No Integrated Expense Management

NAV offered no built‑in system for managing expenses, leading to manual processes. 

Inflexible Licensing

User licenses could not be easily scaled up or down based on operational demand. 

Manual, Time‑Consuming Version Updates

NAV updates required manual execution, creating additional cost and effort with every release. 

The Solution

Migration to Business Central SaaS

Mercurius IT upgraded the organisation to Business Central SaaS, removing performance and infrastructure limitations. 

Removal of Legacy Spindle Objects

All redundant Spindle‑related customisations were removed to support a clean SaaS environment. 

Continia Expense Management Implementation

Mercurius IT configured Continia Expense Management in Business Central to fully digitalise expense processes. 

Introduction of Flexible SaaS Licensing

Business Central SaaS allowed the organisation to scale licences up or down on a prorated basis. 

With SaaS, the organisation now receives automatic updates from Microsoft without effort or downtime. 

With SaaS, Inprova now receives automatic updates from Microsoft without effort or downtime.

Results and Benefits

Improved system performance and reliability

Moving from an on-premise environment to Dynamics 365 Business Central SaaS improved overall system responsiveness and stability. The organisation benefited from faster day-to-day system performance and more reliable availability across core business operations. 

Reduced infrastructure and IT maintenance costs

By retiring on-premise servers, the organisation eliminated infrastructure maintenance overheads and reduced dependency on external IT support for routine system maintenance. 

Zero-effort upgrades and reduced IT workload

Microsoft-managed SaaS upgrades removed the need for manual upgrade planning and execution. This reduced the internal workload associated with version updates and helped teams focus more time on strategic priorities. 

Removal of technical debt and customisation risk

Legacy Spindle components were removed as part of the move to SaaS. This reduced the customisation footprint and lowered future upgrade risk by aligning the solution with Microsoft’s standard extension-based architecture. 

Faster and more efficient expense management

With Continia Expense Management, expense submission and approvals were fully digitised. This reduced manual handling, improved approval workflows, and gave finance teams a more efficient way to manage employee expenses. 

Improved financial visibility and control

Automated posting of expenses into Business Central improved real-time visibility of spend. Finance teams gained better control over expense data, fewer manual touchpoints, and stronger audit and compliance oversight. 

Flexible and cost-efficient licensing

Business Central SaaS enabled pro-rated, scalable licensing, helping the organisation adjust user access as requirements changed and avoid unnecessary licence spend. 

Faster time to value with minimal disruption

The upgrade was completed with minimal disruption to day-to-day operations. Users were able to continue working effectively, supporting business continuity and faster realisation of value. 

Why Choose Mercurius IT?

Proven Expertise in Dynamics NAV to Business Central Upgrades

Mercurius IT has a track record of delivering smooth, low‑risk migrations for organisations moving from NAV to Business Central. 

Strong Knowledge of ISV Solutions (e.g., Continia)

Their team understands how to integrate third‑party extensions like Continia seamlessly into Business Central environments. 

Cost‑Effective and Transparent Upgrade Methodology

Using their structured “Smart Upgrade” approach, Mercurius IT delivers predictable timelines, fixed‑cost options, and minimal disruption. 

Ability to Handle Complex Customisations

Mercurius IT efficiently analysed and removed legacy Spindle objects, ensuring the upgrade did not carry unnecessary technical debt forward. 

Long‑Term Support and Partnership Approach

Beyond the migration, Mercurius IT supports ongoing optimisation, user adoption, and continuous improvement to maximise value from Business Central SaaS.