Ugaritic texts are a good way to get useful background information on OT passages. Unlike Scripture, there are 4 methods (Logos uses) for specifying Ugaritic verses - CTA, KTU, UDB, and Ugaritic Texts (UT).
A useful exercise is to see which resources cite a particular Ugaritic resource, as Logos supports Ugaritic references and footnotes. However, the reference may be in any of the four notations. In Logos 3, via right-click of the mouse you could do an Intersection search across all four notations. In Logos, there is no way to do all four at once, you have to do all four one at a time, or construct the search of all 4 at once, manually. In addition, the search in Logos 4 is a "equals" search, not an intersection, so if the desired Ugaritic verse is cited in a broader range, you won't see it.
I suggest that Logos 4 support a right-click intersection search of all four notations at once, and an equals search of all 4 at once. This was a very valuable feature in Logos 3 that has been lost. Logos' product pages for Ugaritic resources even imply this feature exists, even though it is no longer available (for example, from the Logos product page for the Ugaritic Library):
With the Logos Bible Software edition, the various reference schemes for the Ugaritic tablets (such as KTU, CTA and UT numbers) are mapped, so that all of the Ugaritic and Hebrew books that cite the Ugaritic corpus can function together as an integrated whole, regardless of which citation format is used. Citations in biblical commentaries and lexicons will be able to link to the Ugaritic materials using any of these reference schemes. This makes the digital editions far easier to use than their print counterparts.