You can move up to Business Central from supported forms of Dynamics NAV on-premises, gave that your application customization is taken care of by augmentations. Any information from tables with code customizations can't be conveyed forward from Dynamics NAV.
Renovating from Dynamics NAV to Business Central is just somewhat upheld. In the present rendition of Business Central, when you associate your on-premises answer for the canny cloud, the on-premises organization remains the essential application, and the cloud occupant is, with not many special cases, read-as it were. For more data, see Connect to the clever cloud.
The procedure comprises of two sections:
• Upgrade from Dynamics NAV to Business Central utilizing the apparatuses portrayed in Upgrading to Business Central on-premises.
• Convert non-standard usefulness and customizations to applications and per-inhabitant expansions. For more data, see Deploying a Tenant Customization.
• Enable replication to a cloud occupant as depicted in Connect to the shrewd cloud, and afterward change to utilize the Business Central inhabitant going ahead.

Upgrading from Dynamics NAV
Codeunit 1 has been deprecated and replaced
Dynamics NAV included codeunit 1 Application Management. In Business Central, this codeunit has been resigned, and new 'framework' codeunits have been presented in the 2 billion territory.
For information, see Transitioning from Codeunit 1 to System Codeunits.
V1 Extensions have been stopped
With Business Central, augmentations V1 are never again upheld for on premise establishments. Therefore, any custom expansions V1 must be changed over to augmentations V2 in the old condition before moving up to Business Central.
For data about how to change over to expansions V2, see Converting Extensions V1 to Extensions V2.
MenuSuite not utilized for page and report seek
With Business Central, the MenuSuite is never again used to control whether a page or report can be found in the inquiry highlight of the Web customer. This is currently dictated by explicit properties on the page and report objects. As a major aspect of the application code redesign process, you change these properties on existing pages and reports utilized by the MenuSuite to guarantee that they are as yet accessible from the Web customer. For more data, see Making Pages and Reports Searchable After an Upgrade.